The most common reason people lose their serial number is that they forget where they saved the purchase email. Nitro PDF Software, like most digital retailers, sends your license key immediately after purchase.
Look for an email from cs@cleverbridge.com with a subject line similar to "Reference #[Number]: Your Nitro Pro order". how to find my nitro pro serial number
Some tools claim to extract serials, but many are adware or security risks. Stick to the methods above. The most common reason people lose their serial
Do not edit or delete anything else in Regedit. Changing the wrong value could break other software. like most digital retailers
If you registered your product after purchasing it (which you always should), Nitro keeps a cloud copy of your serial number. You just need to log into their customer portal.