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Error -2023 Nitro Pro

Gavin Firth

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We have two activation numbers which it was running well. As we are updating our sharing point, we dont' know what happened today with Nitro Pro as it is not opening in one of the computers. 

This is the message not allowing Nitro to open:

Nitro Pro has encountered an error with your license. Please re-try activation. If you still encounter an error please contact support. Error code: -2023

I tried to remove Nitro and added again but the same problem persists. 

Can you please advise?


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Allain Umailin

Hello @Gavin Firth,

Thank you for reaching out to us through our Community Forums!

I have logged into our licensing server and I can see you were able to activate today.

To know more about the status of your program, could you please provide a screenshot of your 'About Nitro Pro' window under Help tab? This window should show the exact build of the program and its serial number (format is 13.X.X.X, e.g. 

To find out how to take a screen shot using Snipping Tool, check out this link:


To send them via private message, hover your mouse on top of my name 'AllainU' and select 'Message'.

Thank you very much in advance and I am looking forward to hearing back from you.

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