Could not load file or assembly ‘System.Web’ or one of its dependencies. The module was expected to contain an assembly manifest.

RELYON TECHSUPPORT Post in Dotnet Framework Related

Error:

Could not load file or assembly ‘System.Web’ or one of its dependencies. The module was expected to contain an assembly manifest.

Snapshot:

Workaround 1:

  1. Before starting .NET framework installation, disable or pause antivirus software.
  2. Disable antivirus firewall
  3. For Net Protector antivirus software disable antivirus shield.
  4. Install the .NET Framework 2.0 Sp1.

Workaround 2: 

Clean the .NET Framework components completely from control panel and Follow the below 10 steps:

  1. Open control panel, click Add\Remove Programs and uninstall the .NET Framework.
  2. Run .NET Framework cleanup Utility to clean the .NET Framework components completely.Download: .NET Framework cleanup tool
  3. If it prompts for System restart then restart it
  4. Navigate to Windows folder: “C:\Windows\”
  5. Rename folder “assembly” to “assembly1“
  6. Rename folder “Microsoft.NET” to “Microsoft.NET1“
  7. Open registry: Click Start | Run | type regedit.exe | Click OK.
  8. Navigate To: “HKLM\Software\Microsoft” registry
  9. Delete .NETFramework key
  10. Install Microsoft .Net Framework 2.0 SP1.