If you have installed the latest Avast security update, you may receive the following error message when logging into NOAH System 3:
The license file in use is invalid! Please reinstall your NOAH System license file.
This error occurs because the keylib32.dll file in Avast has been blocked.
To solve this error:
- In the Avast program, select Maintenance > Virus Chest.
- Right-click on the keylib32.dll file and select Restore.