This is the situation:

  • Max-upload size is set to 100 MB
  • zip isn't in the list of blocked file types

Does anyone have an idea what could be the problem?

The error-message that is given doesn't contain any error-number of error-message.

4 Answers 4


Try first a reboot. Also check that no time out occurs. You can increase the time out value in the web.config.

How to achieve this: http://weblogs.asp.net/jeffwids/archive/2010/09/04/how-to-increase-the-timeout-for-a-sharepoint-2010-website.aspx


This may sound silly, but please make sure you have enough hard disk space on the machine where you database is located. If this isnt the cause of the problem, try increasing your IIS Timeout and the max request size in your web.config

Kind Regards

  • I did this and it didn't solved my problem.
    – BenCes
    Commented Jul 20, 2012 at 12:38

In addition to all the above, make sure the file name doesn't have any special characters in it like: & " : * ? <> # {} % ~ / \ Tab


  • The file-name only contains normal characters and a _. Thanks for the help anyway.
    – BenCes
    Commented Jul 20, 2012 at 12:34

You must increase the max upload size both in SharePoint and in IIS.

See Sharepoint 2007/2010: How To Increase File Upload Size Limit

  • I did this but this didn't solved the problem we're having. Maybe the IIS-server should get a reboot?
    – BenCes
    Commented Jul 20, 2012 at 12:35

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