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grovenetsupport
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Apple Macs keep loosing connection to server

Hi there, we have a client with a small network Server 2008 backend mix of PC and Mac. The Macs keep getting booted off the server and disconnecting remote desktop connection in under 3 minutes. They will auto reconnect but not straight away. Any ideas?
Windows Server 2008Apple Networking

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grovenetsupport

8/22/2022 - Mon
Rob G

You don't have power save turned on, on the NIC on either the server, or the MAC do you?

Also,
I am really not a MAC guy, But i assume MAC doesn't know about group policy.. Windows does not stay connected to the DC constantly either, but does it based on poles, if the policy is default; 2-5min for first connection and every 15min after that.. and only to update user rights etc..
Maybe with MAC you see that connection state change.?
grovenetsupport

ASKER
Hiya, the mac just connects via smb and you can be typing away on something and the connection drops
Rob G

Wired connection or wireless?
Laptop or desktop?
MAC with Intel inside.. or old MAC?

This sounds like more of a network related issue, and not a connection to Windows issue. Do you lose all connection to the network, or only lose connection to the RDP session?
are you internal when you are RDP'ing to the system, or are you connecting via VPN and RDP'ing to the server through the VPN?
Is it all systems? or just a few here and there?
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William Peck
Justin Pierce, MPS-CRM, CEH, CNDA

Hi Grovenetsupport,

 I've seen this problem quite a few times and it is usually related to DNS. Here is a great document to start with: http://training.apple.com/pdf/wp_integrating_active_directory_mav.pdf

Page 5 is where you should start from.

That said, I would recommend Thursby's ADmitMac: http://www.thursby.com/products/admitmac
It really turns the Mac into a true AD client and is great for bringing your Mac into secure AD environments. (It was the only thing that allowed me to work in big corporations that see Macs as alien technology. lol)

Hope this helps.
grovenetsupport

ASKER
Thanks will give it a go and come back to you
grovenetsupport

ASKER
Only confusion is it only started this week after 2 years of being fine?
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grovenetsupport

ASKER
Ok been on site today and the actual problem reared its head. When 2 mac users enter the same smb share the one gets booted off. I changed one of the machines to link using cifs:\server and both seem to go on together?
Justin Pierce, MPS-CRM, CEH, CNDA

Great news! A little weird, but still good news. Could be something going on with OpLocks or Breaks. This is the what I could find out about the Level2 OpLocks, "If an exclusive OpLock is held by a client and a locked file is opened by a third party, the client has to relinquish its exclusive OpLock to allow the other client's write/read access. A client may then receive a 'Level 2 OpLock' from the server. A Level 2 OpLock allows the caching of read requests, but excludes write caching."

Not sure, but it's a educated guess and a place to start from. If you ever get the chance try out the Thursby software, it truly was a lifesaver for me when I needed to make my Mac act and behave like a MS system.

VR,

MacGuy47
grovenetsupport

ASKER
Not good didn't last long and problem has come back. I think there must be a DNS issue on the network or something as this is bizarre. Been working fine for 2 years then Monday bang! There were two windows updates on the 10th and 11th both to do with remote desktop updates but I have removed them and rebooted server
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James Murphy
Justin Pierce, MPS-CRM, CEH, CNDA

Alright, bad news then. Did the rebooting of the server help? If not then certainly check the DNS. You may want to perform a packet trace and see if can make heads or tails as to what is going on. Pg 6-7 on the PDF should assist you in getting this done. Wireshark of course is better, but as most Sys Admins & Net Admins will tell you "Use whatever you got to get the job done."
grovenetsupport

ASKER
Just to mention LogMeIn sessions don't last either can be on for 60 seconds or 3 minutes and bang booted off?
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grovenetsupport

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grovenetsupport

ASKER
Problem solved itself
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