The following error message pops-up when trying to launch FineReader <version>:

Service ABBYY FineReader <product version> Licensing Service
(ABBYY.Licensing.FineReader. <product version>) failed to start. Verify that you have sufficient privileges to start system services.

The issue can appear on a workstation that uses endpoint security software (e.x. Carbon Black anti-virus software).

There are 2 known solutions to fix this issue:

Solution 1 - completely disable all defensive processes in AV software (if it's possible without any risk);
Solution 2 - add folders and processes of FineReader <product version> to exceptions:

Folders:

1. C:\Program Files (x86)\ABBYY FineReader <product version>
2. %username%\AppData\Local\ABBYY\FineReader\<product version>
3. %username%\AppData\Roaming\ABBYY\FineReader\<product version>
4. C:\ProgramData\ABBYY\FineReader\<product version>
5. C:\Program Files (x86)\Common Files\ABBYY\FineReader\<product version>

Processes:

1. FineReader.exe
2. FineReaderOCR.exe
3. NetworkLicenseServer.exe
4. Comparator.exe
5. FineGuard.exe
6. FineUpdate.exe
7. Registrator.exe
8. ScreenshotReader.exe
9. HotFolder.exe