Cannot install add ons
Trying to install add-ons, I get "An unexpected error occurred during installation."
I checked the about:policies#active and InstallAddonsPermission is false.
The Firefox is portable and I was able to install add-ons in the past.
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It is a managed computer, and this is why I use the portable version. I was under the impression that the portable version is not subjected to a policy since the software is not being installed.
You can get support on Portable Firefox here: