Activate Error: Could not load file or assembly 'System.Runtime.Serialization, Version=, Culture=neutral, PublicKeyToken=b77a5c561934e089' or one of its dependencies. The system cannot find the file specified.

Published: 2011-05-20


Last Updated: 2011-05-20

Applies To


When you open Guard1 Plus for the first time and attempt to enter your Support Code you receive the following error:




The Microsoft .NET Framework installation is corrupt.



  1. Uninstall Guard1 Plus via Add or Remove Programs or Programs and Features in Control Panel.
  2. Restart the PC.
  3. Uninstall all Microsoft .NET Framework versions 2.0, 3.0 and 3.5 components via Add or Remove Programs or Programs and Features. NOTE: Your PC may not have all three versions installed.
  4. Restart the PC.
  5. Reinstall Guard1 Plus. This will reinstall .NET 3.5 SP1.


More Information

Refer to Microsoft KB article 923100 for information on uninstalling and reinstalling .NET Framework components and links to download all .NET Framework versions.















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