Unable to Login to Sky website using Firefox

[popacatapetal]

As per title .Shows error code 289 so currently using Edge

No problem using Firefox  to sign in with other websites.

[caesarome · Accepted solution]

Could be it be an add-on that is causing this, have you tried disabling them be by one to see what happens ?

[Mark39]

The Duck Duck Go Firefox add-on can cause this.

[popacatapetal]

Sky website perfectly OK yesterday but not today.

I remembered the Privacy Essentials addon problem when mentioned by @Mark39 and @caesarome as it has been mentioned earlier this year but to my knowledge there have been no recent updates to Firefox.

All OK now after switching off Duck Duck Go Privacy Essentials.

Will re-enable it next week and see what happens.

Thanks for the info.

[popacatapetal]

I've just checked out Duck Duck Privacy extensions and found that it was updated on 23-1 -23.

Is this update significant?

No further login issues after disabling it.

[Mark39]

I've no idea what was included in the Duck Duck Go update,  but 289 errors caused by this extension have been around from long before that.