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Couldn't load XPCOM error in non-persistent VDI

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We use Firefox fairly extensively in our VDI environment and has become our organization's standard web browser. In a non-persistent VDI environment, on occasion we have users that experience the dreaded "Couldn't load XPCOM" popup error message. In my research this usually is attributed to a faulty/corrupt update. We are a VMware View shop using instant clones with what's called a "Writable Volume" which is, in essence, a file system filter that allows certain user data to be written to persistent storage and the rest is written to the non-persistent VM. Upon logout the persistent disk is detached and the non-persistent VM is removed/rebuilt.

We are using the ESR branch of Firefox with policies configured to disable automatic updating, so I'm not sure where Firefox is breaking. Is there anything I can do to assist? On top of this, it's more difficult to reproduce since I'm unable to causing it to error out myself.

We use Firefox fairly extensively in our VDI environment and has become our organization's standard web browser. In a non-persistent VDI environment, on occasion we have users that experience the dreaded "Couldn't load XPCOM" popup error message. In my research this usually is attributed to a faulty/corrupt update. We are a VMware View shop using instant clones with what's called a "Writable Volume" which is, in essence, a file system filter that allows certain user data to be written to persistent storage and the rest is written to the non-persistent VM. Upon logout the persistent disk is detached and the non-persistent VM is removed/rebuilt. We are using the ESR branch of Firefox with policies configured to disable automatic updating, so I'm not sure where Firefox is breaking. Is there anything I can do to assist? On top of this, it's more difficult to reproduce since I'm unable to causing it to error out myself.
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  • User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.100 Safari/537.36

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FredMcD
  • Top 10 Contributor
4225 Lösungen 58984 Antworten
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Let’s do a full clean re-install;

Note: Firefox comes in three or more folders on all computers. They are;

Maintenance: (Programs Folder) <Windows Only> Firefox itself: (Programs Folder) And two folders in the profile of each user on the computer for each Firefox profile for that user.

If you remove the Firefox folder, the user profiles would not be affected.


Download Firefox For All languages And Systems {web link}

Save the file. Then Close Firefox.

Using your file browser, open the Programs Folder on your computer.

Windows: C:\Program Files C:\Program Files (x86) Note: Check Both Folders

Mac: Open the "Applications" folder. https://support.mozilla.org/en-US/kb/how-download-and-install-firefox-mac

Linux: Check your user manual. If you installed Firefox with the distro-based package manager, you should use the same way to uninstall it. See Install Firefox on Linux; https://support.mozilla.org/en-US/kb/install-firefox-linux

If you downloaded and installed the binary package from the Firefox download page, simply remove the folder Firefox in your home directory. http://www.mozilla.org/firefox#desktop ++++++++++++++++++++++++++++ Look for, and remove any Mozilla or Firefox program folders. Do not remove the Mozilla Thunderbird folder if there is one.

Do Not remove any profile folders.

After rebooting the computer, run a registry scanner if you have one. Then run the installer. +++++++++++++++++++++++++++ If there is a problem, start your Computer in safe mode and try again.

http://encyclopedia2.thefreedictionary.com/Linux+Safe+Mode This shows how to Start all Computers in Safe Mode; Free Online Encyclopedia

Let’s do a full clean re-install; Note: Firefox comes in three or more folders on all computers. They are; Maintenance: (Programs Folder) <Windows Only> Firefox itself: (Programs Folder) And two folders in the profile of each user on the computer for each Firefox profile for that user. If you remove the Firefox folder, the user profiles would not be affected. ----------- [http://www.mozilla.org/en-US/firefox/all/ Download Firefox For All languages And Systems] {web link} Save the file. Then '''Close Firefox. ''' Using your file browser, open the '''Programs Folder''' on your computer. '''Windows: ''' C:\Program Files C:\Program Files (x86) '''Note:''' Check Both Folders '''Mac: ''' Open the ''' "Applications" ''' folder. https://support.mozilla.org/en-US/kb/how-download-and-install-firefox-mac '''Linux: ''' Check your user manual. If you installed Firefox with the distro-based package manager, you should use the same way to uninstall it. See Install Firefox on Linux; https://support.mozilla.org/en-US/kb/install-firefox-linux If you downloaded and installed the binary package from the Firefox download page, simply remove the folder Firefox in your home directory. http://www.mozilla.org/firefox#desktop ++++++++++++++++++++++++++++ Look for, and remove any '''Mozilla''' or '''Firefox''' program folders. Do not remove the '''Mozilla Thunderbird''' folder if there is one. '''Do Not''' remove any profile folders. After rebooting the computer, run a registry scanner if you have one. Then run the installer. +++++++++++++++++++++++++++ If there is a problem, start your '''Computer''' in safe mode and try again. http://encyclopedia2.thefreedictionary.com/Linux+Safe+Mode This shows how to Start all Computers in Safe Mode; Free Online Encyclopedia
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