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Cryptographic failure while signing assembly ... Access is denied.

Published to Blog on 23 Oct 2006

I received the following error today after installing the newest AJAX Control Toolkit (formerly Atlas Control Toolkit):

Cryptographic failure while signing assembly ‘AtlasControlToolkit.dll’. Access is denied.

Seems I had a permissions error. Did a bit of searching on Google and found this post on a blog by R. Aaron Zupancic. That did the trick.

I would have never thought that the permissions error had something to do with the C:\Documents and Settings\All Users\Application Data\Microsoft\Crypto\RSA\MachineKeys folder.

Dan Hounshell
Web geek, nerd, amateur maker. Likes: apis, node, motorcycles, sports, chickens, watches, food, Nashville, Savannah, Cincinnati and family.
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  • On 25 Feb 2008 "Greg Smith"" said:
    This helped a lot. Thanks
  • On 11 Jul 2008 "porksmash"" said:
    Your website does not work at all in firefox 3
  • On 22 Mar 2009 "John B"" said:
    Yep, that did it for me to. Thank you for finding this, it saved me some headaches today!
  • On 27 Apr 2009 "Matt"" said:
    Good find. Saved me some time today!
  • On 25 Aug 2009 "Eduardo"" said:
    nice one!
  • On 1 Dec 2009 "Diego Guidi"" said:
    thanks ;)