Accounting 2.0 - License: Unable to startup AutoCount Server - System.Security.Cryptography.CryptographicException: Padding is invalid and cannot be removed

From AutoCount Resource Center

Question: When open AutoCount Server, system prompted error “System.Security.Cryptography.CryptographicException: Padding is invalid and cannot be removed.”

Cryptography exception1.png


Possible Reason :

License file decryption issue.


Solution :

1) Go to Windows search menu, search for %programdata%

Cryptography exception2.png


2) Double click on “AutoCount Backup Server”.

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3) Delete the LicenseDeviceProfileTable and LicenseInfo file.

Cryptography exception4.png


4) Get the latest AutoCount Server installer from your software dealer and re-install it by Run as Administrator.

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5) Go to Windows search menu, search for Services and open it. Make sure AutoCount Server Service status is Running.

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6) Right click on AutoCount Server and open License Setting.

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7) Click on Add to activate back your Product ID.

Cryptography exception8.png


Note: Please seek assistance from your software dealer if the problem still persists after performing the suggested steps.


By: Cit Ta 220411, Lay Swan 220427, P220428


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