Firefox Enterprise Community Forum

We've been noticing for some time now that we haven't been able to load the Microsoft Bookings Page using the Microsoft Store version of the Firefox web browser.

Here's what we have tried and what we know: -We cleared cache and cookies using the "Everything" drop down option to no avail. -Confirmed that we are running the latest version and no extensions are running. -Tested running it in "New Private Window" to no avail. -Tested Diagnostic Mode to no avail. -Tested Refresh Firefox to no avail. -We confirmed that we are able to login and load the Microsoft booking page using different browsers (Edge, Chrome and even Firefox directly from their own page) with no issues. - We confirmed that different users can replicate the issue and can be replicated on a different computer as well. -We confirmed that we are able to access other Office 365 web apps with out an issue on the Microsoft Store version of the Firefox web browser.

Microsoft Support stated that they are able to replicate the issue on their end, but advised to reach out to Firefox support to investigate this further.

Feel free to let me know if any other information would be helpful such as .HAR log file(s) etc.

Thanks!

Hello,

we are trying to update our Firefox ESR to 128.2.0 version.

The install seems to get stuck when executing "C:\Program Files\Mozilla Firefox\default-browser-agent.exe" -register-task 308046B0.

We've tried updating to 115.15.0 first, that seems to install fine. After updating to 115.15.0 we tried to update to 128.2.0 again and it still hangs on the same part.

Also note that this happens on both EXE and MSI package. We also use the Finnish language version.

Firefox version

   128.2.0esr (64-bit)

Operating system

   Windows 10/Windows11 23H2 Septembre patch

Hello everyone,

maybe you can tell me/explain what the problem could be.

In our company we had Firefox version 115.14.0esr (64-bit) and then we updated to 128.2.0esr (64-bit).

Since version 128.2 ESR we have experienced problems in Firefox when trying to access DNN+ pages (with login). https://www.dnn.de/sport/regional/dresdner-sc-denkt-ueber-uebernahme-der-margon-arena-nach-C3IC74MZ6FE43AKGCZJSKUXA3I.html

In Firefox the content is cut off, in Edge it is displayed normally.

With Edge and Firefox 115.14.0esr the page is displayed normally. No AdBlock installed.

In developer mode I see the errors in the versions, so it shouldn't be that.

Cross-source (cross-origin) request blocked: The same-source rule prohibits reading the external resource on https://gum.criteo.com/sid/json?origi...AAAAAAAA&gdpr=1. (Reason: CORS request failed). Status code: (null).

Cross-source (cross-origin) request blocked: The same-source rule prohibits reading the external resource on https://id5-sync.com/api/config/prebid. (Reason: CORS request failed). Status code: (null).

Any ideas? Thank you very much! :)

I need some help to get Intune Firefox Extension Management to work.

I have imported the Firefox ADMX into Intune but cant seem to get the JSON correct for this to work correctly.

The scenario I would like to give is I would like to block all extensions but allow Power Automate Extension and Cisco Web Ex Extension.

Any help would be appreciated!

Hi,

At my work, we use Windows AppLocker to allow only trusted code to be executed. Firefox works great in this environment, but I do have a request.

We were regularly getting notices of untrusted code being attempted from the "%windir%\temp\NS?????.tmp\" folder, which was a mystery to us for a long time. We finally tracked the cause back to "C:\Program Files\Mozilla Firefox\uninstall\helper.exe", which extracts DLLs (e.g. system.dll, shelllink.dll, userinfo.dll and accesscontrol.dll). It's my pleasure to report that the extracted DLLs ARE signed (btw, thank you so much for that!!). However, I had an embarrassingly hard time getting to this point since the code is code only exists temporarily, and I sadly never had the thought that NS might mean Netscape.

Incase there are others in my situation, I was wondering you'd like to prepend the .tmp folder name to include moz- or Mozilla?

I think there may be others in my situation, since our instance that followed the best practice of exempting all DLLs in Program Files from the exclusion policy, and since Firefox keeps all DLLs in Program Files, these were the only Firefox DLLs being checked.

Thank you for 30 years of a great product!

Rob