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I've just switched on a PC for the first time in several months, and I'm periodically getting the following Windows Security dialogue box prompting me for a Username / password:

The server (redacted) at (redacted) requires a username and password.  Warning: This server is requesting that your username and password be sent in an insecure manner (basic authentication without a secure connection)

Now, the server name in question relates to my previous job, and I did have email, VPN etc for that job set up on this machine. I thought I'd uninstalled everything related to that, but obviously not, and it seems that something is still trying to connect & is then triggering the dialogue.

How can I tell what the errant program is that's trying to establish this connection?

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Could be a networked drive.. check My Computer for any disconnected drives.

Is it at random times or every X hours? You could look in Schedule Tasks for corporate antivirus updates, etc.

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Yeah, a networked drive was a possibility but no, there aren't any listed if I select "Computer -> Disconnect Network Drive". Still, I think it might be triggered by using Windows Explorer, so something along these lines is a possibility. – therefromhere Dec 27 '11 at 12:04
You could try searching your registry for the server name/ip. – drudge Dec 27 '11 at 12:06
There was never corporate antivirus or scheduled tasks set up on this machine, so it's not that. – therefromhere Dec 27 '11 at 12:07
Searching now... – therefromhere Dec 27 '11 at 12:08
No joy with searching the registry :\ – therefromhere Dec 27 '11 at 12:12

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