Geeks With Blogs
Sathya Narayanan Srinivasan .NET Developer
1. Click Start, and then click Run. 2. In the Open box, type regedit, and then click OK. 3. Locate, and then click the following registry key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\UsbStor 4. In the right pane, double-click "Start". 5. In the Value data box, type "3" (without quotes), click Hexadecimal (if it is not already selected), and then click OK. Note :- if 3 is entered it will open the port and if 4 is entered it will close the port. 6. Quit Registry Editor. Posted on Saturday, April 16, 2011 5:17 PM | Back to top


Comments on this post: How to Enable USB Port through Regedit in Windows if it is blocked

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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hi pls help me
Left by ravi on Oct 14, 2011 1:28 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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I tried following the tip given but I wasn't able to do what was required. I need to put a lot of practice to this one because I think this is going to come in handy. - Mario Romano Colts Neck
Left by Mario Romano Colts Neck on Jan 24, 2012 9:06 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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Thanks, this helped me in unlocking the blocked usb port.

Regards
Rahul
Left by Rahul on Feb 17, 2012 8:03 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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u r best teacher.
Left by sheer amman on Jun 15, 2012 8:55 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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Thank you, its working.
Left by ajay on Jul 17, 2012 1:38 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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I checked it is already set it 3 in my machine. what is the other way to enable/ open usb port.
Left by sachin on Jul 18, 2012 7:16 PM

# How to Enable USB Port through Regedit in Windows if it is blocked
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thax its working
Left by diapk on Aug 09, 2012 9:42 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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This does not entail if there is no "Start" key
Left by daryl on Aug 20, 2012 7:48 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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Unable to locate any start in HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\UsbStor
please help
Left by Kukaram on Sep 08, 2012 2:49 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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My Laptop USB Port is not accepted any USB or any HDD Please help me and send me any set up and manual
Left by Asad Ameer on Sep 09, 2012 8:10 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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Hi I have tried this and found the same info there, my USB is blocked by the IT team they have put some policies, is there any procedure we can open the USB and IT want be able to find
Left by Prianshu on Sep 12, 2012 7:07 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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I tried it detected mass storage device but i didn't find the device in "My Computer"
Left by vijay on Sep 21, 2012 8:23 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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I tried this but when I took a look it already was on 3 and on hexadecimal (or something like that). help pleas?????
Left by lucius100 on Oct 28, 2012 3:52 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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Enable USB Port
Left by siva on Oct 31, 2012 1:03 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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It works well. Thank you!
Left by Ankur on Nov 24, 2012 10:02 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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please is there any solution for my ipad when i pnizedlug it to my pc it shows usb not recog
Left by emmanuel on Nov 29, 2012 6:28 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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PLS HELP US, ITS ALREADY ''3'' IN THE MACHINE AND IN HEXA... WHAT OTHER WAY?
Left by Stanley on Dec 06, 2012 7:23 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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usb Block and Enable
Left by Ansar Khan on Dec 18, 2012 8:43 PM

# re: PLS HELP US, ITS ALREADY ''3'' IN THE MACHINE AND IN HEXA... WHAT OTHER WAY?
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My USB not work I use your method but not work how can I work it, its my personal PC
Left by Imran on Jan 04, 2013 11:05 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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this is very helf full us thanks

regards

tech team banglore
Left by mehboob on Jan 11, 2013 6:32 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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In my systems can't open usb port how to regedit ,how to solve these type of problems,,,,
Left by sathiskumar on Jan 12, 2013 11:41 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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I can't find the correct port for my printer to print,what do I do?
Left by Richard on Jan 17, 2013 9:57 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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its shows an error " cannot edit start : Error while the value's new contents.
Left by Saurabh on Jan 22, 2013 11:48 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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Usb block guide
Left by samir shaw on Jan 23, 2013 7:56 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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i cant usb port since i applied regedit method . it shows result port is in open (i.e. value is 3)
Left by R Padmanabhan on Jan 25, 2013 7:42 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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thaking u......
Left by baadshah on Feb 03, 2013 12:32 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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There are many tricks and tips about Enable or Disable USB Port but if you want to learn it then simply go to the http://softlinktricks.blogspot.in/2012/12/how-to-enable-or-disable-usb-port-from.html

OR simply download the Application USB PORT OPERATOR from the following link IT SOLVED your problem http://softlinkplanet.blogspot.in/2012/12/download-usb-port-opearatorexe.html
Left by troubleshooter on Feb 04, 2013 1:17 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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Hi,

I already followed the steps provided above but still all USB ports in my laptop was not yet detected. Please help me. Thanks
Left by Cal on Feb 14, 2013 9:18 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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it works like a charm !! - Thanks a lot
Left by Raj on Feb 22, 2013 1:44 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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Hey in the Value data box its already "3"
so is there any other way??????
Left by J on Mar 01, 2013 5:02 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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very good
Left by BHONG on Mar 02, 2013 10:49 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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Thanks Mate its Work ....
Left by Ravi G on Mar 07, 2013 10:10 AM

# re: How to Delete usb storage through regedit for Windows 8
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Sir, pl urgent inform to me
Left by bala on Mar 20, 2013 1:24 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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Hi bala,

I havent used windows 8, so have no idea on that.
Sorry that I couldnt be of much help
Left by Sathya on Mar 21, 2013 7:04 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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Thanks a lot, it worked for me.
Left by Santosh on Apr 15, 2013 1:52 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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i unable to do this because when i m doing this it show the error " CAN'T EDIT START: ERROR WRITING THE VALUE'S NEW CONTEN'S"


please help regarding this,,,,,,
Left by Malvin on May 04, 2013 4:07 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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value is already 3 still can't access usb port? how to go about it?
Left by hkloo on May 15, 2013 5:47 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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it works thanks..
Left by Ravi on May 18, 2013 10:58 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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it works dude, but there is still one problem.
in my ofc pc, i got the port access, in my computer i can see a removable disk (E), but when i click on it to open, i gives an error "Access denied".

help me out
Left by kedar annam on May 24, 2013 11:43 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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hey it works dude, but there is still one problem.
in my ofc pc, i got the port access, in my computer i can see a removable disk (E), but when i click on it to open, i gives an error "Access denied".

help me out
Left by kedar annam on May 24, 2013 11:43 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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I tried following the tip given but I wasn't able to do what was required
Left by vinod on May 25, 2013 2:16 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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I followed the steps but got the error: Cannot edit Start: Error writing the value's new contents.

what should i do?
Left by Rick on Jun 10, 2013 9:07 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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I followed the steps but got the error: Cannot edit Start: Error writing the value's new contents.
Left by Raquibur Rahman on Jun 19, 2013 3:49 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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NPAV is installed in my system by Admin. Even after correcting the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\UsbStor start to 3 it immediately get updated to 4 by default. Thanks in advance for the reply
Left by RAVEENDRAN PS on Jun 21, 2013 3:10 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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MY USB PORTS WERE BLOCKED BY SYSTEM ADMIN. IT IS PROTECTED WITH PW. HOW CAN I DELETE THE SAV OR HOW TO UNBLOCK USB POTS BLOCKED THROUGH SAV.
Left by anup kumar b on Jun 21, 2013 3:17 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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I see HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\UsbStor start =3
in my system. still i can not see USB but mouse and data cord working fine.

can you pls help me
Left by trivani on Jul 03, 2013 9:46 AM

# How to Enable USB Port through Regedit in Windows if it is blocked
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if a USB storage device is already installed on the computer, set the Start value in the following registry key to 4:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\UsbStor
When you do this, the USB storage device does not work when the user connects the device to the computer. To set the Start value, follow these steps:

Click Start, and then click Run.
In the Open box, type regedit, and then click OK.
Locate and then click the following registry key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\UsbStor
In the details pane, double-click Start.
In the Value data box, type 4, click Hexadecimal (if it is not already selected), and then click OK.
Exit Registry Editor. typing 3 will enable usb again
Left by mumtaz amir ranjha on Jul 04, 2013 12:21 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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thanks sir
Left by sujeet on Jul 10, 2013 11:47 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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its not working in WINDOWS7.............
Left by kumar on Jul 13, 2013 5:12 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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how to enable installed flash drive in a computer?
Left by venz on Jul 19, 2013 7:14 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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seems like Regedit is also blocked.. is there someother way to unblock the usb at startup etc??
Left by Zohaib on Jul 24, 2013 1:39 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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what about value 2 or 1
Left by gafer on Jul 30, 2013 2:07 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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when i follow the same instructions the error am getting is > cannot edit start error writing the value's new contents plz help me in this
Left by KIRAN on Aug 28, 2013 8:38 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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but this problem is still ccomes
Left by dipak on Aug 29, 2013 1:14 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\usbstor]
"Type"=dword:00000001
"Start"=dword:00000004
"ErrorControl"=dword:00000001
"DisplayName"="USB Mass Storage Driver"
"ImagePath"=hex(2):73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,44,00,\
52,00,49,00,56,00,45,00,52,00,53,00,5c,00,55,00,53,00,42,00,53,00,54,00,4f,\
00,52,00,2e,00,53,00,59,00,53,00,00,00

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
"NoWelcomeScreen"=dword:00000001
Left by Chard on Aug 29, 2013 6:13 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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Thanks,its working
Left by Shanawaz Khan on Sep 13, 2013 3:01 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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your information is very useful.
Left by selva on Sep 18, 2013 11:09 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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When i connect pendrive to my pc, pc show "window no disk"
please tell me solution
Left by sunil kumar on Sep 19, 2013 6:54 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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This Works for me..thanks...
Left by Rakshit on Sep 23, 2013 9:29 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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Thank You very much.. It worked...
Left by Salma Fazly on Sep 26, 2013 3:29 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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I checked it is already set it 3 in my machine. what is the other way to enable/ open usb port.
Left by Singh on Sep 30, 2013 10:41 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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Can anyone help me to enable USB ports for a particular device only?
Left by Jibin Joy on Oct 01, 2013 1:32 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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it works...!!!
Left by sumeet on Oct 10, 2013 8:55 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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hi,pls help me .i can not use my usb ,so my adminestor closed my usb.tQ
Left by reza on Oct 21, 2013 1:32 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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Hi,
USB port is open by changing the value to 3, but it only opens data card.

If I try to open pen drive or a hard disk, it is not shown in My computer.

Please help me out, if you are aware of the solution to this specific problem.
Left by Lakshit on Oct 22, 2013 3:13 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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Enable USB Port through Regedit in Windows if it is blocked
Left by pawan on Oct 23, 2013 11:25 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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Thanks, this helped me in unlocking the blocked usb port.

Regards
Abdul Majeed
Left by Abdul Majeed on Oct 24, 2013 10:29 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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But some tools use more complex methods for disabling usb ports. For example take a look at USB Security Suite from www.dynamikode.com
Left by Ranjana on Oct 31, 2013 2:23 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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thanx more
it is working 100%

Left by Rajoo Prajapati on Nov 01, 2013 8:00 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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'Can not Edit Start Error writing the values new contents'

Tis is the message I am getting if I follow your stems kindly assists
Left by Jude on Nov 08, 2013 9:45 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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it really works well with enabling and disabling the USB ports, what if the device itself is not recognized?.
Left by wilmwas on Nov 19, 2013 1:46 PM

# USB port blocked by group policy , unable to copy into usb drive
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Error 0x800704EC: This program is blocked by grouped policy.
Left by Dipak on Nov 22, 2013 7:02 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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check this app its easy to use and really powerfull. Download from :

http://urcaccess.blogspot.in/
http://www.freewarefiles.com/URC-Access-Modes_program_83126.html
Left by Kumar on Dec 01, 2013 11:18 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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I want both of enable or disable from regedit please
Left by Kishore Subba on Dec 16, 2013 6:40 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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Thanks.. it work..
Left by Dhananjay on Dec 16, 2013 7:19 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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hey it works dude, but there is still one problem.
in my ofc pc, i got the port access, in my computer i can see a removable disk (E), but when i click on it to open, i gives an error "Access denied".

Plz help me
Left by Joy on Dec 27, 2013 5:48 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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It's Already in 3 Only How to Access my USB.
If I Change the the Number, It Shows "Cannot edit start: Error Writing the Values new Contents" Please help Me.
Left by rajesh on Jan 12, 2014 2:39 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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I have reached to "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services" as you can see in the following screenshot: http://screencast.com/t/OSgnihYgN
But after this, it does not show "usbstor"...Yes you can have a look for proof: http://screencast.com/t/wpAp3SSih
Can anyone explain me why I can't I see "usbstor" option??????????????????
Left by Nabeel on Jan 19, 2014 9:21 PM

# How to Enable USB Port through Regedit in Windows if it is blocked
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Step 1
Click "Start" and select "Run."

Step 2
Type "devmgmt.msc" in the Open field and press "Enter" to open the Device Manager console.

Related Reading: How to Enable the Concurrent Users' Sessions on Windows XP

Step 3
Expand the computer name and expand the "Universal Serial Bus controllers."

Step 4
Right-click the USB host controller that has an "X" beside the icon and select "Enable."
Left by sathya moorthy on Jan 20, 2014 7:52 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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this was a great help for me
Left by Fuad D. Gabisi on Jan 22, 2014 9:14 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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thank you for your help.
Left by Nimai Mandal on Jan 23, 2014 10:44 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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I tried but an error window pop up saying...cannot edi the start. Error writing the values new contents

..pls help
Left by Raymond on Jan 30, 2014 3:13 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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bro.....its awsome........i like it
Left by sanjay on Feb 01, 2014 11:20 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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Thank you, you are amazing! I was following another advices but nothing worked, finally I could activate my usb ports. On my regedit I did not have the HLM\System\CurrentControlSet\Services\UsbStor , so I added the entry with the 3 value and problem solved! Thank you again.
Left by Manuel Canto on Feb 05, 2014 9:33 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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not working
Left by Naveen on Mar 04, 2014 9:55 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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why are Enable USB Port through Regedit in Windows if it is blocked
Left by bhola ram saini on Mar 14, 2014 12:51 PM

# re: How to disable USB Port through Regedit for storage device not for cameras in Windows 7
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V good
Left by Manoj vats on Mar 20, 2014 10:00 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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i m going step as per above bt there r i didn't get start .
there r only two menu thats hv no any number
wht may b pblm


all other cmptr hv got start one hv not y?
Left by ravi on Apr 19, 2014 11:21 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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I cannot see start in the registry so what can i do in this case
Left by rodric on May 21, 2014 10:05 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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Hi,
My usb port is enabled ,it is detecting but when i am clicking to open it ,it throws error that "You do not have permission to access this device."

Thanks and Regards,
Aswini Rout
Left by Aswini Rout on Jun 03, 2014 6:33 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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my company pc usb is disenabled so pls how to enabled tell me
Left by manjuanth on Jun 03, 2014 5:42 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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Hi, It is too helpful, it is properly blocked and also unblocked.
Left by Pulak Mondal on Jun 07, 2014 3:28 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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I ve done all the steps 1-16 as above but still when I open my computer I do not see the drive "F" wic is my removable storage . However wen I plug in the USB the computer shows that it has found a storage device and even makes the ping sound that it wasn't making before when it was blocked. Please assist. Do I have to put a 4 and then a 3 again perhaps.?
Left by naison goremusandu on Jun 08, 2014 2:27 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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the 4 usb port of my ACER 4310 is not functionng anymore after the system displayed "the usb device overcurrent or surge current please remove the device and preess reset to resolve problem?" i did it remove my external DVD rom and press reset, it goes back to normal but after 12 hours i restart my laptop the USB port did not recognize my flashdisk anymore what is the problem how to re enable my port? anybody can help me please, i beg you everybody. thanks !!!!!!
Left by wennie on Jun 16, 2014 10:55 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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My USB drives as well as Desk Drives is not function and not reading.
Left by Ron on Jun 21, 2014 11:39 AM

# how to enable regedit if it is disabled
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plz help me!
Left by Ph4ntom on Jun 26, 2014 1:52 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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Hi ,

Obviously many of us want to enable the usb ports in our offices. Where every thing is blocked either by Windows policies or by antivirus. And in general majority of us are basic users (Not windows Admin) .When i try to do the above process it is showing "Can not edit start: error in writing the value's new content.

Plz help if possible.
Left by Maamba on Jul 14, 2014 2:39 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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Hi,

could you please advice how do I enable internet dongle by blocking usb ports for pendrives.

Please help if possible.
Left by mike on Sep 14, 2014 11:06 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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I SHALL NEVER POOP ON UR GRAVE AGAIN SIR :D
Left by EPIX on Nov 21, 2014 5:33 PM

# re: How to Enable USB Port when blocked By domain policy in Client computer.
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Please help if possible.
Left by Ismatullah on Nov 26, 2014 10:27 AM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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After changing the value to 3, open an elevated command prompt and run gpupdate /force.
Left by Karl on Dec 10, 2014 11:39 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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THANKS ZU 4 FEXING LAPTOOP

I WIRE U NIGERIAN RHUBIES
Left by Bubba on Mar 18, 2015 6:18 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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Thank you , its working for me.
Left by AnushaNelavalli on Apr 06, 2015 4:23 PM

# re: How to Enable USB Port through Regedit in Windows if it is blocked
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Thanks for the tip but its still not working. Please any other way.
Left by Odz on Apr 27, 2015 6:08 AM

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