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NP 12 Will not install

John Hoss

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I purchased an upgrade to NP 12 several months ago and attempted to install it.  The wizard fails with no documentation as to why. No error codes.  I submitted this to tech support and they responded with something about Windows changing permissions on folders.   I did not have time to fool with it so I just kept using the Trial version, now expired.  Today, I need to used NP for editing so I have to go back and figure out how to install it.    Does anyone know the secret to installing NP 12 on a Windows 10 machine?   I have a paid license for NP 12.


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I have followed these instructions.

https://kb.gonitro.com/knowledgebase#/search/wizard has failed/000003595

After correcting the command lines to capture C:\  instead of %  I got them to sort of work.

The Administrator Power Shell indicates I now have ownership.  But the wizard still fails.

Moving to the GUI I see the folder WindowsApps is still listed as read only.  I removed that flag.

Wizard still fails.

This is why I did not bother up grade to NP 13.  NP12 never worked.

I really hate Windows and Microsoft.






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  • Official Nitronaut

Hello JRH,

Please use the tool I have provided below to remove all files associated with Nitro Pro and reboot your system.

NOTE: This clean-up tool will erase any existing signature files within Nitro, so please save them to another location before using the clean-up tool in order to keep them. Please see this link for backing up custom stamps/signatures: https://kb.gonitro.com/knowledgebase#/search/stamps/000004307

When your system is back up, close all of your open applications and install Nitro Pro from the links I have provided below:

32 bit 
64 bit

I hope this helps!

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