KB5066835 update fails to install. It just keeps on failing to install after multiple attempts. One of the most efficient methods to resolve this problem quickly is to rename the Windows\SoftwareDistribution folder & run the Windows update once again.

Steps

• Stop the Windows Update Service from Windows Services
• Stop BITS
• Go to Windows folder, rename SoftwareDistribution folder to softwaredistribution.old or softwaredistribution.littlejoe (up to you). You may asked for Administrative confirmations.
• Restart Windows
• Check for updates or click the retry button and everything should be fine now.

Applies on both Windows 10 and Windows 11 distributions while the update with issues is specific to Windows 11.