Adguard extension gets in the way of Firefox Sync, blocks it


New Member

I noticed FF Sync failing to sync my devices, everything: history, logins, bookmarks. Suspecting the most probable culprit I paused Adguard Extension and almost immediately saw all my history entries and other syncing data appearing in appropriate places. Please, bear this information in mind while developing both the extension and filters.


Quality Assurance
Staff member
Hello there!

You can find out which rule or setting blocks synchronization.
To do this, previously open the filtering log, try to synchronize and notice the blocked requests.
I suspect that the cause of the problem may be one of the settings in the Stealth-mode section.