If some Windows functions aren't working or Windows crashes, use the System File Checker to scan Windows and restore your files. Though the steps below might look complicated at first glance, just follow them in order, step-by-step, and we’ll try to get you back on track. Run the System File Checker tool (SFC.exe) To do this, follow these steps:

Fixes an issue in which the connectivity test that is run by the Dcdiag.exe tool fails together with error code 0x621 on a domain controller that is running Windows Server 2008 R2 or on Windows 7 if you install one or more teaming network interfaces.

Learn how to use the Gaming Services Repair Tool to troubleshoot installation and update issues with Gaming Services on PC.

You notice that Lightweight Directory Access Protocol (LDAP) or Kerberos responses from the domain controller are delayed by 2 to 5 seconds. When the issue occurs, the Lsass.exe process CPU usage is low (even lower than usual). Around the same time (but up to a 4-hour offset), you may receive Netlogon warning event 5807.

Failure to obtain a Teredo IP address can occur when there’s an issue with your Teredo adaptor, when a device on your network is blocking the Teredo protocol or if there’s software installed on your PC that’s disabling Teredo functionality.

If some Windows functions aren't working or Windows crashes, use the System File Checker to scan Windows and restore your files. Though the steps below might look complicated at first glance, just follow them in order, step-by-step, and we’ll try to get you back on track. Run the System File Checker tool (SFC.exe) To do this, follow these steps:

Learn how to fix error 0x80073CFC so you can play an Xbox Game Pass game on your Windows 10 device.

System Configuration is a system utility that allows you to troubleshoot issues with Windows startup. It provides options to customize the startup process, including the ability to enable or disable software, control startup services, and access other advanced system settings.

When you run a "Full Import" process on Azure AD Connect against a Windows Server 2012 R2 DC, the Local Security Authority Subsystem Service (LSASS) causes an access violation in the DC. This causes the DC to crash or restart.

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