Metadata file 'C:\WINDOWS\assembly\GAC_32\System.EnterpriseServices\2.0.0.0__b03f5f7f11d50a3a\System.EnterpriseServices.dll' could not be found

Solution

- You have to use command line. From start menu, select 'Run' > type 'cmd' press enter. then directly go folder:

cd C:\WINDOWS\assembly\GAC_32\System.EnterpriseServices
- press enter.
rd 2.0.0.0__b03f5f7f11d50a3a
- press enter.
cd C:\Windows\Microsoft.NET\Framework\v2.0.50727
- press enter.
copy *.dll C:\WINDOWS\assembly\GAC_32\System.EnterpriseServices\2.0.0.0__b03f5f7f11d50a3a
- press enter.This should solve error.

Try to rebuilt your asp.net application.