![How to fix Error 97 (Microsoft Access Error 97) - Can not call friend function on object which is not an instance of defining class. How to fix Error 97 (Microsoft Access Error 97) - Can not call friend function on object which is not an instance of defining class.](https://www.errorvault.com/en/images/runtime-errors_error-97_microsoft-access-error-97.png)
How to fix Error 97 (Microsoft Access Error 97) - Can not call friend function on object which is not an instance of defining class.
![Unable to access VSA Login page with error message "Could not load type 'System.Runtime.CompilerServices.ExtensionAttribute' from assembly 'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'." – Kaseya Unable to access VSA Login page with error message "Could not load type 'System.Runtime.CompilerServices.ExtensionAttribute' from assembly 'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'." – Kaseya](https://helpdesk.kaseya.com/attachments/token/DxP1Y25BAgIb07PwKHCC0ZHjW/?name=2015-06-06_1252.png)
Unable to access VSA Login page with error message "Could not load type 'System.Runtime.CompilerServices.ExtensionAttribute' from assembly 'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'." – Kaseya
![Microsoft Access 97 (8.00.3512) (1997-01) [German] (CD) : Free Download, Borrow, and Streaming : Internet Archive Microsoft Access 97 (8.00.3512) (1997-01) [German] (CD) : Free Download, Borrow, and Streaming : Internet Archive](https://archive.org/download/microsoft-access-97-8.00.3512-1997-01-german-cd/media-disc01.png)