assemblies - Could not load file or assembly 'someProject' or one of its dependencies. Access is denied

Question

I am stuck with one asp.net error. My application work fine on development and test environemnt. But on production it give me following error:

Could not load file or assembly 'someProject' or one of its dependencies. Access is denied.

Answer 1

Go to Sysinternals and download Process Monitor: http://technet.microsoft.com/en-us/sysinternals/bb896645.aspx

Then start it up, filter thread and registry actions away. Clear contents. Run your app and get the error, and then stop the collection in process monitor. Now search for an ACCESS DENIED status, and you'll be able to see the exact file that's causing troubles, as well as the user account trying to get access.