Symptoms

When the License Manager is launched, the following message appears:

Error communicating with ABBYY Product Licensing Service on %SERVERNAME%: The RPC server is unavailable.

Resolution

To manage licenses on the License Server, a user has to be in one of two local groups on the License Server:

• ABBYY Licensing Administrators
• BUILTIN\Administrators.

Please find the detailed information in the following Knowledge Base article: You do not have the rights to manage licenses on the license server. 

If these conditions are met but the error message still occurs, uninstall License Server and License Manager and delete the following folders if they exist:

• C:\ProgramFiles (x86)\ABBYY FineReader <version>;
• C:\ProgramData\ABBYY\FineReader\<version>;
• C:\Users\%username%\AppData\Local\ABBYY\FineReader\<version>;

Then install License Server and License Manager anew, create an administrative installation point and install FineReader on workstations.