We have all options installed on our clients. with the previous version (prior to 12.1.2 MP1) our LAN network worked fine. we were able to run our ERP software which resides on our domain controller.
After upgrading SEPM to the latest version, it sent upgrades to all clients & servers on our network. after which, we have difficulties running our ERP software.
after several hours of checking, found that when i disable Network Threat Protection, the ping time to our domain controller is 1ms. when the NTP is activated, the ping time is 54ms.
after googling around & still could not find solution for what may have gone wrong, i have disabled NTP on all our XP workstations. the surprising fact is that this network slowness only affects XP PCs & not Win7 PCs or Servers.
My setup is as follows:
All servers have basic protection. ie. Antivirus & proactive Threat protection.
All clients have full protection. ie. all options.
what after upgrade is causing my ERP software to work very very slowly (after one click, we have to wait for 1min or so). whereas other network based software like browsing internet, email client IM etc works properly.
I have also added our ERP application to exception list but of no use.
Guys please help me as this is the first time in 4 years that i have such issues with SEP.
regards SRI.