Vanishing from Firefox and needs to be reinstalled (Win7 x64, Firefox 45.0 x64)

[Ketrel]

Describe the issue

Every so often, I restart firefox for some reason or another (usually with a reboot) and I find that ublock is uninstalled. Reinstalling it is fine and my settings are still there, but it's happened upwards of 10 times.

One or more specific URLs where the issue occurs

Not specific to sites

Screenshot in which the issue can be seen

Already reinstalled, nothing to take screenshot of

Steps for anyone to reproduce the issue

What I just did that produced it last time

1. Closed Firefox with the X button.
2. Selected "Save and restore at startup" to Session Manager Prompt
3. Rebooted machine
4. Opened Firefox
5. Noticed ublock button was missing refreshed a page to confirm

   Your settings

Checked Settings, all others unchecked

• Settings->Hide placeholders of blocked elements
• Settings->Make use of context menu where appropriate
• Privacy->Disable pre-fetching (to prevent any connection for blocked network requests)
• Privacy->Disable hyperlink auditing/beacon

Browser/version: Windows 7x64 Firefox 45.0 x64

uBlock Origin version: Unsure which one I was on prior. Has happened through a number of versions, I install the latest dev each time it's happened.

Your filter lists

• My Filters (defined below)
• uBlock Filters
• uBlock Filters - Badware risks
• uBlock Filters - Privacy
• uBlock Filters - Privacy
• uBlock Filters - Unbreak
• EasyList
• Peter Lowe's Ad server list
• Easy Privacy
• Malware Domain List
• Malware domains

  Your custom filters (if any)

@@||www.hlserve.com/Delivery/ClientPaths/Library/hook.js$script,domain=www.costco.com www.abandonia.com###block-block-70 > .content > .fundingdiv imgur.com###side-gallery imgur.com###fixed-side-footer-links imgur.com###inside > .post-pad.left > .post-container > .fixed-share-container

Additional Info

I also use uMatrix, and it's never occurred with that.

[gorhill]

There is no code in uBlock Origin to uninstall itself without the browser asking for it. So something else on your side is doing this. See https://github.com/gorhill/uBlock/wiki/Software-known-to-have-uninstalled-uBlock-Origin.

[Ketrel]

I didn't think it was intentional, I thought it may have been a glitch of some sort.

But I do use Avira as the AV. I just checked the quarantine and the XPI is there. I'll whitelist it.

Thanks. Didn't realize it was actually getting removed rather than corrupted somehow.