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Getting rid of Norton popup on a Windows 10 system.

I'm not sure what website triggered this but I was looking for an owners manual for a Computemp 5.
If I click on the right arrow it closes but reappears
If I click on settings nothing in there that looks to be helpful.
If I click More I get another window.
It says related to Norton and I don't have Norton on this system.
Thanks.
iouk
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Principal Software Engineer
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Commented:
Looks like the system is infected with something; but first look at the installed programs list and confirm that Norton is not installed.  It may have been installed as an unwanted bloatware when the system was purchased.

Assuming that Norton is not installed:

Run the installed antivirus set to maximum sensitivity and see what it finds.

Download the free version of Malwarebytes (not the paid one, it just adds more overhead to the system) and run it.  See what it finds.

Download Spybot - Search and Destroy and see what it finds.
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Author

Commented:
Malwarebytes found this:
PUP.Optional.PushNotifications is Malwarebytes’ detection name for a large collection of domains that deploy malicious or fraudulent web push notifications on Chromium based browsers.

It has not occurred again so I'll delay with Spybot but I did not instantly find the version for Windows 10.
Dr. KlahnPrincipal Software Engineer
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Commented:
If you do go ahead with Spybot, consider running the Immunizer.  This loads the hosts file with a list of dodgy sites that should not be visited.  Once that is done it become impossible to visit those sites with any browser.
Hello ThereSystem Administrator
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Distinguished Expert 2018
Commented:
When something like this happens, I usually run Google Chrome Cleanup Tool.
Open Chrome browser and go to chrome://settings/cleanup
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Author

Commented:
It's back and I'm in the middle of the spybot scan.
e
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Author

Commented:
Google cleanup did not find anything. Spybot found 59 things and 3 high risk. The popup has not occurred again but it's only been a few minutes.

m
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Author

Commented:
Hello ThereSystem Administrator
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Distinguished Expert 2018

Commented:
Seems fine now. Still, I would run some additional scans just for sure. Some free tools I use: Kaspersky TDSSKiller for removing rootkits, Malwarebytes and HitmanPro for removing malware, AdwCleaner for removing adware.
Also, remove all 'unknown publisher' or recently added apps as well as recently downloaded files. Run Disk Cleanup to delete temp files.
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Author

Commented:
Issue has not occurred again.

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