'Please try again or contact support if this error persists. (Error 401).'

[Helen Daglas]

I am having the same issue when I open a PDF. The PDF takes a long time to open after I clear this message. I  can't find any solutions.

[Allain Umailin]

Hello @Helen Daglas,

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

In order to further assist you, could you please open your Nitro Pro 13, 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 13.X.X.X, e.g. 13.6.0.108). 

To send it 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.