Client Error Key not valid for use in specified state

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Log.log message

'Internal.Cryptography.CryptoThrowHelper+WindowsCryptographicException: Key not valid for use in specified state.

Resolution / Suggested Action

Uninstall the AppGate SDP Client, delete the certificate, and reinstall the Client, as detailed below.

Uninstalling the AppGate SDP Client

  1. Press the Windows+R keys together, or type "run" in the Windows search field and press Enter.

  2. Type "control panel" in the Open: field.

  3. Click OK to launch the Windows Control Panel (below).   

  4. Click Programs.

  5. Click Programs and Features.

  6. Select the AppGate SDP client.

  7. Click Yes to allow the program to make changes. An AppGate SDP Uninstall window appears:

  8. Click Next to uninstall the Client.

Deleting the Defective Certificate

  1. Press the Windows+R keys together, or type "run" in the Windows search field and press Enter.

  2. Type "certmgr.msc" in the Open: field.  

  3. Click OK to launch Microsoft Certificates (below). Use Microsoft Certificates to locate and select the defective Certificate. 

4.Use Microsoft Certificates to locate and select the defective Certificate.

5. Right click the certificate, and select Delete from the resulting menu.

Re-Installing the AppGate SDP Client

Re-install the client as detailed at Getting Started > Installing Clients in your AppGate SDP Admin Guide (find the Admin guide for your AppGate SDP version here).    

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