Hi Mike,
UNP (Universal Notification Platform) is a component of the Windows Update Service, I believe it was first introduced in version 1703, if memory serves me correctly.
UNP/CampaignManager.exe can also be present if a home/Wi-Fi network is or has ever been used or setup on the PC.
On my Win 10 Pro version 1903 build 18362.418 Workstation that has never been joined to any network in anyway, home, Wi-Fi, work or otherwise, the UNP/CampaignManager.exe file does not exist. (File Explorer snapshots below):
The System32 UNP folder:
The Program Files UNP folder contains Log files only:
These are .etl (Windows Performance Analyzer) log files.
Now, being that all of the updates related to versions 1703 thru 1903 have installed successfully on this device (and no network has ever been setup), these log files are empty.
Now, that being said, the CampaignManager.exe file name has been known to be used by some malicious (spyware, adware, trackers etc.) software to disguise themselves as a legit Windows OS entity. In such a case as being possible I would recommend running a MBAM Free scan as it specifically targets the above and PUP's as well, (note that any Potentially Unwanted Program results that are flagged may be something that you may want to keep, in such a case check the scan log for the file locations to research).
Hope this can help and Good Luck!
-Richard
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