The add-on from services.addons.mozilla.org could not be installed because it does not match the add-on Firefox expected
I cannot download and install any add-on. I get the following message every time "The add-on from services.addons.mozilla.org could not be installed because it does not match the add-on Firefox expected."
I cannot download and install any add-on. I get the following message every time "The add-on from services.addons.mozilla.org could not be installed because it does not match the add-on Firefox expected."
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Does it work if you temporarily disable your anti-virus software software (e.g. real-time scanning)?
No. Tried that, uninstalled Firefox, reinstalled and same result.
The add-ons that have links to their homepage I can install from their site.
So finally figured it out. I disabled Advanced Dynamic DNS Service in my router and everything works fine now.
Which is weird since I was able to update add-ons on my wife's laptop yesterday with it on.
Which is weird since I was able to update add-ons on my wife's laptop yesterday with it on.