Error 23 when I try to activate

[Colleen]

Hi,

I purchased Nitro Pro 11 in 2017 and it worked just fine until last week when it started giving an error that the trial has expired. So I uninstalled and re-installed Nitro Pro 11. And now encountering this Error 23 when I try to activate it with my serial number.

I have sent a direct message to AllainU with my serial number. Would you please help me fix this issue?

Thanks.

[Allain Umailin]

Hello @Colleen,

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

I just made an adjustment on your license, so you can now activate your copy of Nitro Pro by going to Help tab > About Nitro Pro > Activate, entering your serial number and clicking Activate.

Thank you for choosing Nitro and I hope this helps!

[Colleen]

Hi @AllainU, 

I followed your instructions yesterday and the Trial Mode disappeared.  Just tried using Nitro Pro today and the trial mode in on again. Please help!

Thanks.

[Allain Umailin]

Hello @Colleen,

My apologies for this inconvenience.

Did the affected machine installed a major Windows Update prior to this issue?

If yes, kindly note upon the upgrade of the operating system or installing a major Microsoft update, the Computer ID is changed, as it is comprised partially by the operating system. Once changed, this will no longer recognize the original installation causing the program to revert to trial mode.

To fix this issue, I just made another adjustment on your license, so you can now activate your copy of Nitro Pro by going to Help tab > About Nitro Pro > Activate, entering your serial number and clicking Activate.

Thank you for choosing Nitro and I hope this helps!