I have a very strange issue that I cannot seem to determine the root cause.
SBS 2011 Server with all updates and fully patched.
All clients are laptops with windows 7 pro and have DHCP addresses from the SBS server and DNS pointing to the SBS server.
The network is wired and wireless with WPA encryption.
Randomly the clients cannot logon. When they enter their credentials they get stuck at the spinning circle with "Welcome" on the screen.
I have looked in the event log and do not show any errors such as group policy that they are getting hung at.
So far I have found three work-arounds.
1. Disable wireless adapter
2. Remove and re-add workstation to domain for temporary fix
3. Delete one of the DNS records in the SBS server for that workstation. There are two records because each workstation has a wireless adapter and Ethernet adapter with different ip's.
First, enable Verbose mode for your domain (Computer Config\Admin Templates\System).
This will tell you if a specific client side extension is holding up logon.
Next, check out: http://msdn.microsoft.com/en-us/performance/cc709422.aspx
Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.
Possible fixes for Windows 7 and Windows Server 2008 updating problem. Solutions mentioned are from Microsoft themselves. I started a case with them from our Microsoft Silver Partner option to open a case and get direct support from Microsoft.
By default the complete memory dump option is disabled in windows . If we want to enable the complete memory dump for a diagnostic purpose, we have a solution for it. here we are using the registry method to enable this.
Microsoft Active Directory, the widely used IT infrastructure, is known for its high risk of credential theft. The best way to test your Active Directory’s vulnerabilities to pass-the-ticket, pass-the-hash, privilege escalation, and malware attacks …