Connection Manager VPN profile corrupted - all remote workers at same time.

SBS2003 server at main office
6 x WinXP remote clients using PPTP VPN to connect to RRAS on the server.

This morning I've had calls from all of the remote workers complaining they cannot connect to the VPN.  Having checked their PCs I find that I can telnet to port 1723 on all their machines - but I cannot establish a connection using the Connection Manager profile.

The only way to resolve the issue was to delete the profile and reinstall.

All working ok now.

But what would have caused this in the first place?  I checked all their PCs for recent updates - none of them have any that were installed within the last week.  They've been using the same setup for around 2 years now without issue.

Any ideas?


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devon-ladAsked:
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snagsy1980Commented:
If you check your error logs and see if there are any related errors on the vpn server. post them here
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devon-ladAuthor Commented:
No errors or warnings in the server logs - neither remote access related or otherwise.
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snagsy1980Commented:
The only things i can think of are if the configuration has changed or someone reconfigured Routing and Remote Access Service? also the  'Dial-in' permissions.may have been changed (new GPO or something like that?) Also perhaps the authentication methods on the clients were changed (again GPO?) and no longer matched the server.
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devon-ladAuthor Commented:
Hmmm...well I'm the only person who has access to this particular server and I haven't changed anything for the past couple of months - and haven't made any GPO changes for a couple of years.

I made no change to the server settings to get them connected again - all I did was reinstall the CM profiles on their PCs.
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snagsy1980Commented:
any firewalls been updated?
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devon-ladAuthor Commented:
No...not in the last year
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snagsy1980Commented:
The only other thing common to all is the router (if you have one!) when was it last re-booted? apart from that I've no idea lol :-)
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devon-ladAuthor Commented:
Can't remember the last time it was rebooted.  It's on a UPS as well, so it wouldn't have been affected by power surges or anything.
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snagsy1980Commented:
We have a cisco router here which routes our hq vpn, it has been known to throw a wobbly every now and again. don't forget they are software controlled. So i expect when you reconfigured the profiles the routing tables were re-freshed and the problem cleared (hence no error messages on server)

hope I have been of help
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devon-ladAuthor Commented:
Hmmm, well I don't think it has anything to do with the routing tables.  These are not updated until a connection is established.
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devon-ladAuthor Commented:
Realised what it is.

The company changed name around 3 years ago, and therefore changed their domain name.  However, the old domain name was still valid.  vpn.olddomain.com pointed to the IP of vpn.newdomain.com.

Their old domain name has recently expired - hence the reason they couldn't connect.  The current CM profile is configured with the new domain for a recent new employee - the only one that didn't have any problems - so when this was reinstalled on all machines it fixed the problem.
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