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Error code 401


Aaron Lewis

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  • Official Nitronaut
Allain Umailin

Hello @Aaron Lewis,

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

In order to further assist you, could you please open your Nitro Pro 12, confirm the error message, logout from Nitro Sign at the upper-right corner of the program, close then relaunch Nitro Pro, reset your Nitro Sign password and re-login Nitro Sign? How did it go?

If that did not help, 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 12.X.X.X, e.g. 12.0.0.112). 

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

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Mercedes Kristal

I just wanted to say thanks to Aaron for posting this question and thanks to AllainU for the solution. This error code has been driving me crazy since I had to update my Nitro Pro 9 to Nitro Pro 12 a few weeks ago. I just signed out and back in and voila! the error code is gone. Thank you!!!!

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