rebeblack Posted October 29, 2019 Report Share Posted October 29, 2019 I had a windows 10 update that knocked out my Nitro program. The first time I tried to open a pdf after the update, I could not find Nitropro in my system. It somehow deleted from my computer. So, I went and re-downloaded and when I put my serial number in for activation, it said it did not exist. I tried following the help steps and deactivating online and tried again and still it says it did not exist. Link to comment Share on other sites More sharing options...
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