Cannot install any addons in Firefox 100.0.1
FF recently updated itself to 100.0.1 and since this time I have been unable to install any addons. Every time I try to install an addon, I receive the message 'Installation aborted because the add-on appears to be corrupt.' I have uploaded a screenshot which demonstrates this behaviour. This is just an example - all addon installations are affected. My existing addons are unaffected, but if I remove one and attempt to reinstall it, the same result occurs.
All Replies (6)
I disabled all my existing addons and tried installaing again. No change.
The problem with removing them is that reinstallation will fail with the same error. I will try disabling my antivirus to see if that makes a difference.
I tried it with the antivirus and firewall disabled. No change. I am thinking that this is a settings issue.
I have checked for updates and none are available for my addons. The problem occurs for all addons.
It is possible that (anti-virus) security software is causing the problem. Try to disable security software temporarily to see if that makes a difference.
Boot the computer in Windows Safe Mode with network support to see if that has effect.
Does it work to use this alternate installation method:
(A) Right-click the blue "Add to Firefox" button and choose Save Link As to download the XPI file to your computer.
If Firefox cannot save the file, then there could be a problem with the way the link redirects among Mozilla's servers.
If Firefox can save the file:
(B) Open the Add-ons page using 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
(C) On the right side of the page, click the wheel or gear button and choose "Install Add-on from File..." to open a dialog where you can select that XPI file.
Any difference?