"The serial number is already in use" message appears when reactivating the subscription license


After the subscription renewal, not all the features of FineReader PDF are accessible. When trying to reactivate the serial number of the subscription, the error message appears:

The serial number is already in use.


The license parameters were not updated on the machine automatically. Developers are aware of the issue and are working on the fix.


To fix the issue, please update the license manually as follows: 

  1. In FineReader PDF, go to the Help > About > License Info.
  2. Select the license and click the Update... button:
  3. Complete the update via the Internet.

If the issue has not been resolved, please submit a request.

Additional information

How to update the license in FineReader PDF

Have more questions? Submit a request



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