Fixes an issue in which an AD FS-enabled web application that is published for AD FS authentication on a Windows Server 2008 R2-based computer cannot decode session cookies that are received out of order.

Learn how to scan and repair missing or corrupted system files in Windows using the System File Checker tool (sfc/scannow). Follow the steps to run the tool, view the scan results, and manually replace the corrupted files if needed.

Learn how to troubleshoot sound or audio issues in Windows 11 or Windows 10 with step-by-step instructions and tips. Check your speaker output, run the audio troubleshooter, update or uninstall your audio driver, and more.

Learn how to format a 4 GB USB flash drive to NTFS on Windows 10/11 for updating or repairing an Xbox console. This is also required for backing up games and captures on external storage devices.

Fixes an issue in which an AD FS-enabled web application that is published for AD FS authentication on a Windows Server 2008 R2-based computer cannot decode session cookies that are received out of order.

Learn how to locate your BitLocker recovery key, a 48-digit number needed to unlock an encrypted drive in Windows. See where to find it attached to your Microsoft account, work or school account, printout, or USB flash drive.

Learn how to pair, connect, and troubleshoot Bluetooth devices in Windows 11 and Windows 10. Find solutions for common issues such as Bluetooth icon missing, Bluetooth not working, or Bluetooth accessories not responding.

Learn how codecs let you play different formats of audio and video files in Media Player. Find out which codecs are included with Windows and which ones you can install from the Microsoft Store.

When you choose to encrypt all outgoing messages by default, you can write and send messages the same as with any other messages, but all potential recipients must have your digital ID to decode or view your messages. In Outlook, choose File > Options > Trust Center > Trust Center Settings.

If, when you open a file, text appears garbled or as question marks or boxes, Word may not have accurately detected the encoding standard of text in the file. You can specify the encoding standard that you can use to display (decode) the text. Click the File tab.