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If you are attempting to access a blocked file type in SharePoint 2007, you will receive the following error:

The following file(s) have been blocked by the administrator

The following describes how to resolve the issue:

  1. Browse to the Central Admin site
  2. Select the Operations tab
  3. Under the Security Configuration section, click the link for Blocked file types
  4. Select the Web Application that you would like to modify from the drop down list
  5. Each blocked file extension displayed in the list is blocked by SharePoint.  To enable the blocked file extension, simply remove it from the list.
Hope that helps! Posted on Monday, November 12, 2007 10:03 PM | Back to top


Comments on this post: Unblocking Blocked File Types in SharePoint 2007

# re: Unblocking Blocked File Types in SharePoint 2007
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excellent, straight ro the point! Thank you.
Left by skadaddle on Nov 14, 2007 6:22 PM

# re: Unblocking Blocked File Types in SharePoint 2007
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Below is the link that tells there are 2 places you have to remove the file types you want to unblock. Unfortunately I was not able to remove the unblock file type in the application list as stated below.

How to remove unblock file type in the application list?



http://www.sharepointblogs.com/ssa/archive/2006/04/09/unblocking-blocked-files.aspx

Unblocking blocked files
Update (Sep 13, 2007):
You can remove a blocked filetype from the SharePoint Central Administration. There is no such thing as global list. Ignore the message that is shown in SharePoint Central Administration ( .... you must remove it from both global and web application lists).
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To allow a file type that is currently blocked, you must remove it from both the global and Web application lists. This is a very common question asked by the users. If removing the file extension from SharePoint Central Administration does not unblock the file, then you must remove it from the web application as well. Change the application in the "web application" drop down by clicking the arrow and selecting "Change web application" and then remove the file type from the list of blocked files.
Published Apr 09 2006, 06:09 PM by ssa
Left by Ulysses Cruz on Jan 21, 2009 1:39 AM

# re: Unblocking Blocked File Types in SharePoint 2007
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I removed asmx extension from both central administration and web application, even unable to access admin.asmx.
When i removed asmx from Operations> web application>Security Configuration>Blocked files. error thrwing File Not Found
what else i missing here.
Left by janardhan on Apr 08, 2009 3:10 AM

# re: Unblocking Blocked File Types in SharePoint 2007
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I assume this is an IIS 404 error that you're getting. If that's the case, have you run any specific security lock down procedures that might be preventing the .NET runtime from processing the web service request?

That would be my first guess, but it doesn't sound like something that is specific to SharePoint.
Left by Sean on Apr 08, 2009 9:11 AM

# re: Unblocking Blocked File Types in SharePoint 2007
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Hi,

tested it. Do I have to restart MOSS och IIS?
Nothing seems to happen after changes in the web application (defual port 80).

BR
Ulf
Left by Ulf on Jun 05, 2009 1:56 AM

# re: Unblocking Blocked File Types in SharePoint 2007
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"Global" means Central administration aplication so, delete file extension from list in Central Administration > Operations > Blocked File Types, then switch between aplications useing drop down menu on the right side of header and delete file extension from next list as well. It is not necessary to restart anything in order to apply changes.
Left by Tobi on Feb 23, 2011 7:08 AM

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