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Pop-up window asking to insert my computer's username and password for Firefox to install a new helper tool. How to stop this from happening?

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Every time I close Firefox and open it again, a window pops-up asking to insert my computer's username and password for Firefox to install a new helper tool. How can I stop this from happening?

Installed extensions: CanvasBlocker Cookie AutoDelete Decentraleyes DuckDuckGo Privacy Essentials Google search link fix Grammarly for Firefox HTTPS Everywhere LastPass: Free Password Manager NordVPN Proxy Extension - Privacy & Security OneNote Web Clipper Privacy Badger uBlock Origin

Firefox Version: Firefox Quantum 67.0.3 (64-bit)

UPDATE: I gave in and decided to install the latest version of Firefox Quantum manually (67.0.4 (64-bit)). Now it opens without asking me for my login details.

Every time I close Firefox and open it again, a window pops-up asking to insert my computer's username and password for Firefox to install a new helper tool. How can I stop this from happening? Installed extensions: CanvasBlocker Cookie AutoDelete Decentraleyes DuckDuckGo Privacy Essentials Google search link fix Grammarly for Firefox HTTPS Everywhere LastPass: Free Password Manager NordVPN Proxy Extension - Privacy & Security OneNote Web Clipper Privacy Badger uBlock Origin Firefox Version: Firefox Quantum 67.0.3 (64-bit) UPDATE: I gave in and decided to install the latest version of Firefox Quantum manually (67.0.4 (64-bit)). Now it opens without asking me for my login details.
Attached screenshots

Modified by Mario

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Additional System Details

Installed Plug-ins

OpenH264 Video Codec provided by Cisco Systems, Inc. Widevine Content Decryption Module provided by Google Inc.

Application

  • User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:60.0) Gecko/20100101 Firefox/60.0

More Information

My_Cheese_Is_Slippin'
  • Top 10 Contributor
39 solutions 453 answers

Hi Mario, This is a fake! Firefox will always update from within the browser and not from a random webpage. Here are some tips to help recognize and avoid fakes: I found a fake Firefox update

Hi Mario, This is a fake! Firefox will always update from within the browser and not from a random webpage. Here are some tips to help recognize and avoid fakes: [https://support.mozilla.org/en-US/kb/i-found-fake-firefox-update I found a fake Firefox update]
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jscher2000
  • Top 10 Contributor
8583 solutions 70195 answers

Helpful Reply

Hi Mario, have you installed any extensions? Some extensions need an additional program in order to perform system-level operations. Others may be malicious or mischievous.

You can view, disable, and often remove unwanted or unknown extensions on the Add-ons page. Either:

  • Command+Shift+a (Windows: Ctrl+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.

Then cast a critical eye over the list on the right side. 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).

Any improvement?

If you want to share your extensions list for discussion, 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 past "Application Basics" and "Firefox Features" to "Extensions". Then you can select and copy the table that follows (not the entire page, please, that's too much information) using either Command+c or right-click > Copy and then paste it into a reply. It will be messy, but we're used it.

Hi Mario, have you installed any extensions? Some extensions need an additional program in order to perform system-level operations. Others may be malicious or mischievous. You can view, disable, and often remove unwanted or unknown extensions on the Add-ons page. Either: * Command+Shift+a (Windows: Ctrl+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. Then cast a critical eye over the list on the right side. 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). Any improvement? If you want to share your extensions list for discussion, 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 past "Application Basics" and "Firefox Features" to "Extensions". Then you can select and copy the table that follows (not the entire page, please, that's too much information) using either Command+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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cor-el
  • Top 10 Contributor
  • Moderator
17346 solutions 156811 answers

What Firefox version are you running?

  • Firefox -> About Firefox

You appear to be using Firefox 60 ESR and current is 60.7.2 ESR (60.8.0 ESR will be released later this week).

What Firefox version are you running? *Firefox -> About Firefox You appear to be using Firefox 60 ESR and current is 60.7.2 ESR (60.8.0 ESR will be released later this week).
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Question owner

jscher2000 said

Hi Mario, have you installed any extensions? Some extensions need an additional program in order to perform system-level operations. Others may be malicious or mischievous. You can view, disable, and often remove unwanted or unknown extensions on the Add-ons page. Either:
  • Command+Shift+a (Windows: Ctrl+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. Then cast a critical eye over the list on the right side. 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). Any improvement? If you want to share your extensions list for discussion, 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 past "Application Basics" and "Firefox Features" to "Extensions". Then you can select and copy the table that follows (not the entire page, please, that's too much information) using either Command+c or right-click > Copy and then paste it into a reply. It will be messy, but we're used it.

This is the list of extensions I have installed. I installed them.

  • CanvasBlocker
  • Cookie AutoDelete
  • Decentraleyes
  • DuckDuckGo Privacy Essentials
  • Google search link fix
  • Grammarly for Firefox
  • HTTPS Everywhere
  • LastPass: Free Password Manager
  • NordVPN Proxy Extension - Privacy & Security
  • OneNote Web Clipper
  • Privacy Badger
  • uBlock Origin
''jscher2000 [[#answer-1235669|said]]'' <blockquote> Hi Mario, have you installed any extensions? Some extensions need an additional program in order to perform system-level operations. Others may be malicious or mischievous. You can view, disable, and often remove unwanted or unknown extensions on the Add-ons page. Either: * Command+Shift+a (Windows: Ctrl+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. Then cast a critical eye over the list on the right side. 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). Any improvement? If you want to share your extensions list for discussion, 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 past "Application Basics" and "Firefox Features" to "Extensions". Then you can select and copy the table that follows (not the entire page, please, that's too much information) using either Command+c or right-click > Copy and then paste it into a reply. It will be messy, but we're used it. </blockquote> This is the list of extensions I have installed. I installed them. * CanvasBlocker * Cookie AutoDelete * Decentraleyes * DuckDuckGo Privacy Essentials * Google search link fix * Grammarly for Firefox * HTTPS Everywhere * LastPass: Free Password Manager * NordVPN Proxy Extension - Privacy & Security * OneNote Web Clipper * Privacy Badger * uBlock Origin
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Question owner

cor-el said

What Firefox version are you running?
  • Firefox -> About Firefox
You appear to be using Firefox 60 ESR and current is 60.7.2 ESR (60.8.0 ESR will be released later this week).

The firefox version I have is Firefox Quantum 67.0.3 (64-bit)

''cor-el [[#answer-1235719|said]]'' <blockquote> What Firefox version are you running? *Firefox -> About Firefox You appear to be using Firefox 60 ESR and current is 60.7.2 ESR (60.8.0 ESR will be released later this week). </blockquote> The firefox version I have is Firefox Quantum 67.0.3 (64-bit)
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My_Cheese_Is_Slippin'
  • Top 10 Contributor
39 solutions 453 answers

Helpful Reply

Hi Mario, I checked your list of extensions against the Blocked Add-ons list and did not find any listed. Of course, that doesn't mean that yours are 100% safe. I would never give up a password. Here's a site where you can test your pop-up blockers: Test your popup blocker software And some info on how pop-up blockers work: How Pop-up Blockers Work

Hi Mario, I checked your list of extensions against the [https://blocked.cdn.mozilla.net/ Blocked Add-ons] list and did not find any listed. Of course, that doesn't mean that yours are 100% safe. I would ''never'' give up a password. Here's a site where you can test your pop-up blockers: [http://www.popuptest.com/ Test your popup blocker software] And some info on how pop-up blockers work: [https://computer.howstuffworks.com/internet/basics/pop-up-blocker.htm How Pop-up Blockers Work]
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McCoy
  • Top 10 Contributor
495 solutions 4548 answers

Hello mario,

Just to make sure : in "about:support" => Extensions, there is no system add-on called "Application Update Service Helper"?

See : https://www.macintouch.com/community/index.php?threads/safari-firefox-other-web-browsers.759/page-4

Hello mario, Just to make sure : in "about:support" => Extensions, there is no system add-on called "Application Update Service Helper"? See : https://www.macintouch.com/community/index.php?threads/safari-firefox-other-web-browsers.759/page-4
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cor-el
  • Top 10 Contributor
  • Moderator
17346 solutions 156811 answers

Are you possibly using Resist Fingerprinting?

You can check this pref on the about:config page to see if Resist Fingerprinting is enabled and if this pref is user set (bold) reset to false via the right-click context menu.

  • privacy.resistFingerprinting = false

You can open the about:config page via the location/address bar. You can accept the warning and click "I accept the risk!" to continue.

Are you possibly using Resist Fingerprinting? *https://support.mozilla.org/en-US/kb/firefox-protection-against-fingerprinting You can check this pref on the <b>about:config</b> page to see if Resist Fingerprinting is enabled and if this pref is user set (bold) reset to false via the right-click context menu. *privacy.resistFingerprinting = false You can open the <b>about:config</b> page via the location/address bar. You can accept the warning and click "I accept the risk!" to continue. *https://support.mozilla.org/en-US/kb/about-config-editor-firefox
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Question owner

McCoy said

Hello mario, Just to make sure : in "about:support" => Extensions, there is no system add-on called "Application Update Service Helper"? See : https://www.macintouch.com/community/index.php?threads/safari-firefox-other-web-browsers.759/page-4

No there isn't any Add-on named like that. It only showed the Add-ons I installed.

''McCoy [[#answer-1235880|said]]'' <blockquote> Hello mario, Just to make sure : in "about:support" => Extensions, there is no system add-on called "Application Update Service Helper"? See : https://www.macintouch.com/community/index.php?threads/safari-firefox-other-web-browsers.759/page-4 </blockquote> No there isn't any Add-on named like that. It only showed the Add-ons I installed.
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Question owner

cor-el said

Are you possibly using Resist Fingerprinting? You can check this pref on the about:config page to see if Resist Fingerprinting is enabled and if this pref is user set (bold) reset to false via the right-click context menu.
  • privacy.resistFingerprinting = false
You can open the about:config page via the location/address bar. You can accept the warning and click "I accept the risk!" to continue.

Yes. Resist Fingerprinting is on. I had this on for a while but just recently getting this problem.

I decided to install the latest version of Firefox manually (67.0.4 (64-bit)). Now it opens without asking me for my login details. Resist Fingerprinting is still on.

''cor-el [[#answer-1235957|said]]'' <blockquote> Are you possibly using Resist Fingerprinting? *https://support.mozilla.org/en-US/kb/firefox-protection-against-fingerprinting You can check this pref on the <b>about:config</b> page to see if Resist Fingerprinting is enabled and if this pref is user set (bold) reset to false via the right-click context menu. *privacy.resistFingerprinting = false You can open the <b>about:config</b> page via the location/address bar. You can accept the warning and click "I accept the risk!" to continue. *https://support.mozilla.org/en-US/kb/about-config-editor-firefox </blockquote> Yes. Resist Fingerprinting is on. I had this on for a while but just recently getting this problem. I decided to install the latest version of Firefox manually (67.0.4 (64-bit)). Now it opens without asking me for my login details. Resist Fingerprinting is still on.
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jscher2000
  • Top 10 Contributor
8583 solutions 70195 answers

Mario said

I decided to install the latest version of Firefox manually (67.0.4 (64-bit)). Now it opens without asking me for my login details. Resist Fingerprinting is still on.

At some point, your Firefox will learn of the Firefox 68.0 release and download it. If you encounter this permission prompt again, that might be the reason.

''Mario [[#answer-1236955|said]]'' <blockquote> I decided to install the latest version of Firefox manually (67.0.4 (64-bit)). Now it opens without asking me for my login details. Resist Fingerprinting is still on. </blockquote> At some point, your Firefox will learn of the Firefox 68.0 release and download it. If you encounter this permission prompt again, that might be the reason.
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