Solution for the file or directory is corrupted and unreadable in asp net

This is the issue with the ASP.NET file cache.To fix this issue

Go to the ASP.NET temp files generally this is the path

C:\WINDOWS\Microsoft.NET\Framework64\v2.0.50727\Temporary ASP.NET Files\root

Delete the all folders in the location

Before that first  delete  temp files

This will solves your problem ..