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computer cpu runs at 100 with program windowsupdate.ex from a Firefox folder in app data

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My machine keeps hanging running windows 8.1 and task manager shows program windowsupdate.exe running at almost 100% when I check its properties it is in folder Users/app data/roaming/firefox however roaming also has a folder mozilla.

When I check my laptop running windows 7 the mozilla folder is ther but not the firefox one

is theis a genuine folder and is the program genuine or do i have a virus/trojan. A full scan by windows defender finds nothing.

I am able to end task in task manager to correct machine

Any help would be appreciated.

I have googled but could find nothing of use

My machine keeps hanging running windows 8.1 and task manager shows program windowsupdate.exe running at almost 100% when I check its properties it is in folder Users/app data/roaming/firefox however roaming also has a folder mozilla. When I check my laptop running windows 7 the mozilla folder is ther but not the firefox one is theis a genuine folder and is the program genuine or do i have a virus/trojan. A full scan by windows defender finds nothing. I am able to end task in task manager to correct machine Any help would be appreciated. I have googled but could find nothing of use

Chosen solution

hello spectra7045, %appdata%\Mozilla should hold your genuine firefox profile data - as far as i know %appdata%\firefox is not used by firefox or shouldn't be there. i'd try renaming/deleting that directory and running a full scan of your system with different other security tools like the free version of malwarebytes and adwcleaner.

Troubleshoot Firefox issues caused by malware

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Chosen Solution

hello spectra7045, %appdata%\Mozilla should hold your genuine firefox profile data - as far as i know %appdata%\firefox is not used by firefox or shouldn't be there. i'd try renaming/deleting that directory and running a full scan of your system with different other security tools like the free version of malwarebytes and adwcleaner.

Troubleshoot Firefox issues caused by malware

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Thank you for that

I deleted the windowsupdate file from the folder and ran malawarebytes which found nothing other than a few registry items for a serchdial search engine I had deleted. Have deleted the firefox folder and all seems well Have checked this morning and no sign of the firefox folder having been recreated.

Many thanks for the help

spectra7045