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Every now and then I am unable to login to MSN messenger and I get error code 80072745.

"We were unable to sign you in to the MSN Messenger, possibly because of a problem with your Internet connection. Please try again later. 80072745"

The solution to this is to do a full reboot and it works fine, but I don't understand why and I'm trying to get to the bottom of it. This has happened to me on two different machines running Windows 7 in two separate locations 50 miles apart using different ISPs, so I don't believe it to be a networking issue.

Some googling reveals that most people blame anti-virus, but I'm using AVG Anti-Virus on one machine and Windows Security Essentials on the other, so I'm not entirely sure that's it either.

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Is your internet connection otherwise OK at those times? – soandos Dec 18 '11 at 1:42
Completely, no problems whatsoever at those times. – Damo Dec 18 '11 at 3:57

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