Please open control panel on your computer then go to add/remove programs and uninstall firefox then install firefox on your desktop by going to getfirefox.com if this question is about firefox sync please let us know.

I was asking about sync. (Am I right, that it needs to be installed first on the main computer, and not the lesser ones?) Thanks!

You have login info for Firefox Sync. Once installed on your other computer sign into sync on that one then things will start to sync together.

It won't let me install it on the other computer as a new account, saying that my address is already in use (on the small one) -- that is the crux of the problem.

When I try to set it up as a not-new account (clicking that I already have an account), there are different problems.

Am I right in assuming it needs to be installed on the main computer first (so that the smaller one doesn't wipe out the (more extensive) stuff on the main computer as they sync? I would love to be able to uninstall it on the small one, and start from the beginning on the big one.

Hi Rachel!

There's no need to uninstall anything, both devices will share all the information and there's not "master-slave" logic on Firefox Sync. All the devices are the same.

Take a look at this article that explains how to configure your computers: How do I set up Sync on my computer?

The important part is to select "I already have an account" when you are setting up your second computer.

Thanks so much, it was precisely the master/slave issue I was wondering about.

Computer's in the shop, and I'm off on vac to snorkel, so will do it upon my return. Best to you!