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.

Fixes an issue in which the cluster group is in a failed state on a Windows Server 2012 R2-based failover cluster, but you cannot stop the cluster service.

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. To resolve this issue, install update rollup 2962409.

Follow the installation instructions on the download page to install the update. Prerequisites. To apply this update, you must have installed Remote Server Administration Tools for Windows 10. We strongly recommend that you install the latest servicing stack update (SSU) before you apply this update.

Get Help has troubleshooters you can run for many common scenarios. These often help resolve issues without the need to contact support. If a troubleshooter is available for your issue, select Start to run that troubleshooter. After you run any troubleshooter, Get Help provides details on any findings and suggestions for possible remedies.

When critical Windows system files are missing or corrupted, your operating system may begin to malfunction. Common symptoms include Windows features not working properly, system errors, or Windows becoming unresponsive or freezing.

Provides links to the uninstall tools and directions for many security programs.

To run a Control Panel tool in Windows, type the appropriate command in the Open box or at a command prompt. NOTE: If you want to run a command from a command prompt, you must do so from the Windows folder.

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

First, you'll need to download the troubleshooter. Download troubleshooter. If you see the File Download box when you start downloading, select Run or Open. The troubleshooter provides steps for you to follow. If a program isn't listed in the uninstall options, you'll be asked for that program's product code.