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Nitro 12 - Deactivated Online - Can't Activate v12 On PC


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I lost an old computer with v12 Nitro Pro perpetual license.

I deactivated my license through your online portal and it shows:

Number of Activations 0
Number of Activations Allowed 2

When I try to Activate in V12 Nitro Pro (v12 shows in the about screen) on my PC I get Error-23: Error - License number already used.

Could you please assist?

Thank you.

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  • Official Nitronaut
Allain Umailin

Hello @ITguy,

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.

Thanks for choosing Nitro Pro and I hope this helps!

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