Thursday, December 9, 2021

Firefox install add on error

Error: Unexpected error occurred while installing add ons in Firefox.


Fix: Create the following registry key if its not there. If its present, set the value of Default to 1

 

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Mozilla\Firefox\InstallAddonsPermission]
"Default"=dword:00000000

 

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