The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

Question

After signing the third parties assemblies and adding them to GAC I am getting the below error: also the Assembly Binder Log Entry shows this error

It says mismatch

Answer 1

Hum... I faced something similar with the same error message.

In my case I've updated manually the version of the assemblies.

In the referenced assembly I had another version...

So, I updated it in the web.config.

This solved my problem.

Your === Pre-bind state information === seems incomplete. Generally it shows the execution and the last line shows the error, so, we can help only sharing our experiences. Example:

I hope someone else facing this problem find this helpful.