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how can this happen without EXTREME WARNINGS FOR ALL PARTIES?

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I was at a friends office and to avoid wasting time I created an account of his computer and logged into firefow and synced to get my tabs and shortcuts. When i got home and opened my own computer I noticed I had synced ALL HIS BUSINESS AND FAMILY PASSWORDS! This is my best friend so i am not a threat but what if I wasn't? he would have no idea i now have all passwords. I asked the community how I can remove them and they said manually one by one. OK not nice but possible. MY QUESTION: How do i remove MY PASSWORDS FROM HIS COMPUTER which is accessed by everyone in the office??? Do I have to go back to the office to manually delete all my passwords? If so how do I get into his Sync account if neither of us know the password to log in?

I was at a friends office and to avoid wasting time I created an account of his computer and logged into firefow and synced to get my tabs and shortcuts. When i got home and opened my own computer I noticed I had synced ALL HIS BUSINESS AND FAMILY PASSWORDS! This is my best friend so i am not a threat but what if I wasn't? he would have no idea i now have all passwords. I asked the community how I can remove them and they said manually one by one. OK not nice but possible. MY QUESTION: How do i remove MY PASSWORDS FROM HIS COMPUTER which is accessed by everyone in the office??? Do I have to go back to the office to manually delete all my passwords? If so how do I get into his Sync account if neither of us know the password to log in?

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Dexpediter said

However, if its basically on that computer only, And syncing gave me his passwords, doesnt that mean he has an account where lockwise stores his passwords?

When you log into Firefox with your account, it merges the local data in that Firefox profile with the data from your account. This is the original purpose behind Sync, to keep the data in your Firefox installations in sync. Whether the other person had an account before the event, or not, doesn't affect that basic behavior.

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Sorry for the mess! When you connect a new or existing Firefox profile with your account, Sync is enabled by default and goes to work immediately. I'm not aware of any automated way to detangle the mixed data.

If you wanted to clean up your friend's account, you try this: could create a new Firefox profile and connect that profile only to his account, not yours. Then make changes to the data there after it syncs.

One method to suss out a settings issue is:

New Profile Setup

This takes about 3 minutes, plus the time to clean up.

Inside Firefox, type or paste about:profiles in the address bar and press Enter/Return to load it.

Take a quick glance at the page and make a mental note of which Profile has this notation: This is the profile in use and it cannot be deleted. That is your current default profile.

Click the "Create a New Profile" button, then click Next. Assign a name like Cleanup, ignore the option to relocate the profile folder, and click the Finish button.

Firefox will switch your default profile to the new one, so click the Set as Default Profile button for your regular one to avoid an unwanted surprise at your next startup.

Scroll down to Cleanup and click its Launch profile in new browser button.

Firefox should open a new window that looks like a brand new, uncustomized installation. (Your existing Firefox window(s) should not be affected.)

Now you can sign in to your friend's Firefox account. Sync may take a while, so you might just ignore this window for 15-30 minutes, or until you notice logins have populated. Then clean up. Then allow another 15-30 minutes.

When you are done with the project, you can sign out of your friend's Firefox account and close the extra window without affecting your regular Firefox profile. Cleanup will remain available for future access unless you now remove it on the about:profiles page.

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Dexpediter said

If so how do I get into his Sync account if neither of us know the password to log in?

Okay, now, it occurs to me, he might not have had a Firefox Account set up. Or else, in order to sign into your account, you would have needed to sign out of his. If he does have an account, he might have saved the login in Lockwise.

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First of all Thank YOU jscher2000.

I could not log in to his account when I returned to the office and he may not have set up and account at all so your last comment is very helpful.

However, if its basically on that computer only, And syncing gave me his passwords, doesnt that mean he has an account where lockwise stores his passwords? I doubt they are stored in Microsoft edge but they very well could be.

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Chosen Solution

Dexpediter said

However, if its basically on that computer only, And syncing gave me his passwords, doesnt that mean he has an account where lockwise stores his passwords?

When you log into Firefox with your account, it merges the local data in that Firefox profile with the data from your account. This is the original purpose behind Sync, to keep the data in your Firefox installations in sync. Whether the other person had an account before the event, or not, doesn't affect that basic behavior.