Could not load file or assembly 'XXX, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. Access is denied.

      I get this particular error only in our production environment. I have goggled and found lots of solutions. But none of them worked. My application is launched in a clustered environment (4 Web servers). And I am getting this error in all servers. I able to re-produce this error in my local environment by removing "Read & Execute" permission for this component. If this is a root cause of this particular error, then this error should occur for all other components implements in my project.

I also verified the permission type for all others DLLs and found that they have same access as the error generating DLLs. So don't think this is related to any access issue. here with I copied the exact error message , your help would much appreciated