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I'm unable to sync Firefox on my Android, it continuously reports that either the user name or password are incorrect, but I KNOW that they are correctly entered.

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I just installed the Firefox mobile Beta to my Android Incredible and am unable to sync it to my desktop and laptops. When I attempt to sync, it reports that either my username or password are incorrect.

I just installed the Firefox mobile Beta to my Android Incredible and am unable to sync it to my desktop and laptops. When I attempt to sync, it reports that either my username or password are incorrect.

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You must use the same Firefox Sync version on all your devices.

Check out also Firefox Sync troubleshooting and tips.