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Learn More virus

  • 7 replies
  • 1 has this problem
  • Last reply by jscher2000

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Greetings and Thank You,

A javascript virus listed as has been installed into my firefox 79.0.

It does not show up thru regedit.

How can I delete it?

Thanks for your help.

Jason G.

All Replies (7)

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Hi Jason, where do you see this reference? For example:

One possible culprit would be an extension. You can view, disable, and often remove unwanted or unknown extensions on the Add-ons page. Either:

  • Ctrl+Shift+a (Mac: Command+Shift+a)
  • "3-bar" menu button (or Tools menu) > Add-ons
  • type or paste about:addons in the address bar and press Enter/Return

In the left column of the Add-ons page, click Extensions. On the right side, find the "Manage Your Extensions" heading.

If there is at least one extension before the next heading -- "Recommended Extensions" -- please continue:

Then cast a critical eye over the list below that heading. Any extensions Firefox installs for built-in features are hidden from this page, so everything listed here is your choice (and your responsibility) to manage. Anything suspicious or that you just do not remember installing or why? If in doubt, disable (or remove). For your privacy and security, don't let mystery programs linger here.

Any progress so far?


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Thanks for replying so quickly. shows up as a javascript that runs every time I open a firefox browser and click to a page.

It shows up in the extension NoScript's list of queried javascripts from a page. I've set it as Default Not Trusted, but it still shows up. Also tried Custom Not Trusted, but it continues to appear in every page's javascripts to run.

I've run Norton 360 2020, but it does not pick it up.

I've cleared the cache, but it still continues to appear on every page's requested javascript queries.

Hope this info helps.



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How about extensions other than NoScript? Do you have any and have they all earned a clean bill of health in your testing?


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Do you want to share your extensions list? You can copy/paste it from the Troubleshooting Information page. Either:

  • "3-bar" menu button > "?" Help > Troubleshooting Information
  • (menu bar) Help > Troubleshooting Information
  • type or paste about:support in the address bar and press Enter

Scroll down the page to the "Extensions" heading. Then you can select and copy the table that follows (not the entire page, please, that's too much information) using either Ctrl+c or right-click > Copy and then paste it into a reply. It will be messy, but we're used it.


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JScher200, Thanks for following up. This may also be making Firefox constantly crash.

Here's the table that follows the Extension table. Thanks,Jason

Nothing yet. Nothing yet. • resource://gre/modules/osfile/osfile_async_worker.js • • resource:///modules/sessionstore/SessionWorker.js • • resource://gre/modules/subprocess/subprocess_worker_win.js


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You may have ad/mal-ware. Further information can be found in this article;

Run most or all of the listed malware scanners. Each works differently. If one program misses something, another may pick it up.


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Sorry, I forgot the heading was changed from Extensions to Add-ons. Could you paste the text contents of the Add-ons table?



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