Unable to write to output file [FileName] .pdb: Unspecified error Visual Studio

“Unable to write to output file [FileName] .pdb: Unspecified error” for one of the projects.

I have cleaned the project solution , deleting references but that didn’t help

Figured out that there was a missing file in one of the projects. To know which file it is please follow the steps

[1] Close visual studio

[2] Reopen the solution (DON’T build)

[3] Check the Errors List

You should see

Error    1    Unable to open module file [FileName].vb : The system cannot find the file specified.    [FileName] [Project]

Hope its helps!