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Strange network issue - Outlook disconnected, can't ping, CAN get to internet

Posted on 2012-03-15
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Last Modified: 2012-04-28
I have a user on windows 7 with office 2010 and exchange 2010 that has some random disconnects in outlook.  If she leaves it open and running it will eventually say "disconnected", sometimes its quick - sometimes it takes a couple hours.  I got on the server when she was in "disconnected" mode - I could NOT ping her workstation, get on it via VNC, or RDP.  She IS able to get to the internet but its EXTREMELY slow, times out sometimes as the speed is so bad.  I had her go to whatismyip and she is getting the right public IP (not the backup) and its a 50x10 connection so should be fast.
No other users (around 40 total) experience slow internet or anything else.  It has recently been brought up that there are a few other users (win7 with office 2010) that went disconnected - no XP users have had any issues, both on office 03, 07, and 10.
The resolution is usually just close outlook and re-open and its fine (and then I can ping/vnc/rdp).  Sometimes that doesnt work and a reboot is needed.
I DID just upgrade from exchange 03 to exchange 2010, HOWEVER - this user has been having this issue before that even happened.
Checked event viewer on the DNS/AD server and everything was fine.
I left domain, renamed pc and re-joined domain - also did a repair in outlook...Still no luck.
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Question by:rhwimmers
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by:schmitty007
ID: 37725616
Out of curiosity this wouldn't happen to be a DELL laptop connected via wireless would it?
I ask because we had several users experiencing the type of issues and we were racking our brains trying to figure it out. It actually turned out to be a power setting, I know right?

Under control panel and power options and then advanced the drop down box for wireless was on moderate power savings as soon as we turned this to maximum performance all the speed issues random disconnects with exchange all went away.

This may or may not be the case for you but if it is hopefully you can avoid the hours and hours of pain me and a couple guys on my team went through for something so stupid.
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by:Gaurav Singh
ID: 37725630
the first thing to check is NetBIOS over TCP/IP

Open up network connections (In Control Panel)
Right click on your network (Your wireless connection)
Click Properties
In the "General" tab click "Internet protocol" (TCP/IP)
Click "Properies"
Click "Advanced"
Click the "WINS" tab
Click the Enable NetBIOS Over TCP/IP button
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Expert Comment

by:MSPUT
ID: 37727987
is the LAN duplex settings on switches is set to auto or 100 MBPS Full? if it is set to 100 MB or 1GB full on switches then on systems LAN duplex settings should be set to the same.

Check the Firwall service on the systems.

For outlook disconnection issue try disabling the cached exchange mode settings, if issue still persists then it could be because of LAN disconnection.
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by:rhwimmers
ID: 37729180
Not a dell wireless laptop - hard wired set to auto negotiate on client and switch.  Netbios is already on.
Will try disabling cached exchange mode.
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rhwimmers earned 0 total points
ID: 37882674
ended up just replacing the PC as it was old and they wanted a new one anyhow - who knows!
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by:rhwimmers
ID: 37905357
no resolution
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