Error With MySBFiles on Windows

If you get one of the following errors while attempting to access MySBFiles - "Invalid Signature". "System error 2148072478" or "An extended error has occurred"; and you are using a computer running Windows - then you need to map MySBFiles. 

This KB Article References:
MySBfiles
This Information is Intended for:
Instructors, Staff, Students
  1. Open a powershell terminal.

  2. In the terminal type:

    Set-SmbClientConfiguration -RequireSecuritySignature $true

    And Hit Enter

    Screenshot of Powershell terminal with the command Set-SmbClientConfiguration -RequireSecuritySignature $true entered

  3. Retry opening MySBFiles. If you can now access MySBFiles, then you are finished. Only continue to step 6 if you still cannot access MySBFiles.
  4. Go back to Windows PowerShell.

  5. Type

    Set-ItemProperty -Path"HKLM:\STSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters" RequireSecureNegotiate -Value 0 -Force

    And Press Enter

    Screenshot of Powershell terminal with the Set-ItemProperty command above specified

  6. Now you should be able to access MySBFiles. 
This Content Last Updated:
04/09/2026

Please Contact

Customer Engagement and Support
Customer Engagement and Support Help Portal
This KB Article References:
MySBfiles
This Information is Intended for:
Instructors, Staff, Students
Estimated Read Time:
1 minutes
This Content Last Updated:
04/09/2026