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Thunderbird already running

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My wife, daughter and I share one computer. The daughter uses a web based email system. I was using Netscape 7.2 Mail and my wife uses Mozilla Thunderbird.

I decided to switch to Thunderbird. However when I log on to the computer and click on the Thunderbird Desktop Icon or try to run Thunderbird from the Run command I get a message that says:

Thunderbird is already running, but is not responding. To open a new window, you must first close the existing Thunderbird process, or restart your system.

However, according to the Task Manager, Thunderbird is NOT running. Rebooting has no effect. My wife does not get this message when she logs in, her email (using Thunderbird) is working fine.

:) Can someone help?
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Hi jsaklas,

A couple of simple things to check first would be:

Suggest you go to Start > search > For Files and Folders and see what comes up. Do you all have separate accounts on this same computer or work from the same account?

Post back and tell us please. If you have separate log in accounts of course you have to have separate email accounts.

Your wife also would need to log off her email account if you are using the same computer login account to access Thunderbird.

kind regards,
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