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when I start firefox a window opens stating account verified,sync is ready to use.don't use sync.how to stop window from opening

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when I start firefox I get my home page and a second tab opens stating "account verified. you can now use firefox sync" I have never used sync and don't intend to. I can not figure out how to stop the account ferified window from opening.Help!!!!!!

when I start firefox I get my home page and a second tab opens stating "account verified. you can now use firefox sync" I have never used sync and don't intend to. I can not figure out how to stop the account ferified window from opening.Help!!!!!!

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Chosen Solution

Just Disconnect that device from Sync.

See this for instructions. https://support.mozilla.org/en-US/kb/how-do-i-set-sync-my-computer#w_remove-a-device-from-sync