This is a SBS2K3 Premium network, fully patched.
The problem:
All Windows 7 clients could not check for MS updates, it would fail with an error code. BUT, they can browse the internet without any problem. There is a yellow triangle mark on the network icon on right bottom. I followed "Troubleshoot the problem" but it
did not detect any problems.
What i have done:
- Trend Micro has a proxy service, I thought it could cause a conflict with ISA client. So I removed Trend Micro on one Win7, but the problem persists
- I disconnected one Win7 from the SBS2k3 network, and connected it to the router directly, blanked IE Proxy settings, then the problem was fixed - no yellow marks, and Win7 could check for MS updates without any problem.
BTW, ISA 2004 server is fully patched, and I used its latest client published in 2007.
What could be the cause of this weird thing?
Please give me a hand and thanks a lot!!
Jack