Solution- "PDB does not match image" issue in Post Build event in Visual Studio

ByAnkush Jain| Last Updated On Saturday, Mar 24, 2018

.NET IIS

Disclaimer: I am a consultant at Amazon Web Services, and this is my personal blog. The opinions expressed here are solely mine and do not reflect the views of Amazon Web Services (AWS). Any statements made should not be considered official endorsements or statements by AWS.

Root Cause

This error normally occurs when you are using Post Build event to move your .PDB & .DLL files from you current project's bin directory to some other project's bin directory. And when you run the project (in which you have copied the DLLs & PDBs), you find that you are no longer able to debug the project (whose DLLs & PDBs) you have copied from post build event.

Solution

Simply, stop the IIS before building the project. Because, it is the IIS, which stops a Web Project from copying it's DLL & PDB files after build completion. Once you stop IIS and build the project, IIS will stop using those DLL & PDB files and these files will get copied on destination location & hence this issue will get fixed.

Cheers & Happy Coding...!!!