This article describes an issue that occurs when cluster validation is run to validate cluster configuration in Windows Server 2012 R2. A hotfix is available to fix this issue. The hotfix has a prerequisite.

If the steps above don't work, you may need to reinstall Windows. For more info, see Windows 10 recovery options. Describes how to use the System File Checker tool to troubleshoot missing or corrupted system files in Windows 8.1, Windows 8, Windows 7 or Windows Vista.

Symptoms. When you run an application that uses Crypt32.dll on a computer that is running Windows Vista or Windows Server 2008, the application crashes. This issue may occur when you use an application that relies on Public Key Infrastructure (PKI).

Troubleshoots an issue in which the RTCSRV service (Front End server service) for Skype for Business Server 2015 cannot be started. This issue occurs after you uninstall the cumulative update 6.0.9319.0 for Skype for Business Server 2015 Front End servers and Edge servers (KB3061059).

The Windows Malicious Software Removal Tool (MSRT) helps remove malicious software from computers that are running any of the following operating systems: Windows 10. Windows Server 2019. Windows Server 2016. Windows 8.1. Windows Server 2012 R2. Windows Server 2008 R2. Windows 7. Windows Server 2008.

Refunds for digital games include Microsoft Store digital game offers, Xbox apps (excluding movies and TV apps), digital gaming bundle offers, digital game durable content, and some digital game consumable content, whether made available through the Xbox console, on your PC, or on your mobile device.

Symptoms. This issue occurs when you do a storage validation test for a Windows Server 2012 R2 failover cluster and the layout information of one disk cannot be obtained through an I/O operation. Resolution. To resolve this issue, install update rollup 2962409.

Use this tool to find and remove specific prevalent threats and reverse the changes that they made (see the "Covered malware families" list in the "Release information" section of KB 890830 ). For comprehensive malware detection and removal, consider using Windows Defender Offline or Microsoft Safety Scanner.

How to open PC Health Check. In Windows, use Search on the taskbar to search for “PC Health Check,” then select it from the list of results. If a PC Health Check update is available, you can quickly install it for the latest version.

RegSvr32.exe has the following command-line options: Regsvr32 [/u] [/n] [/i [:cmdline]] <dllname> /u - Unregister server. /i - Call DllInstall passing it an optional [cmdline]; when it is used with /u, it calls dll uninstall. /n - do not call DllRegisterServer; this option must be used with /i. /s – Silent; display no message boxes.