Forum Discussion
(KB5064081) (26100.5074) Failed to install - 0x800f081f
Hi.... I've been trying to install 2025-08 Cumulative Update Preview for Windows 11 Version 24H2 for x64-based Systems (KB5064081) (26100.5074) for the last five days. It downloads okay. But when ...
Make sure your system is fully up-to-date and there are no pending reboots:
Open Settings > Windows Update.
If there are pending updates or reboots, complete them.