Efi System Partition
The latest Efi System Partition coverage — news, analysis, and updates from the WindowsNews.AI desk.
Windows 11's Latest Security Update Can Fail Even If Your Drive Isn't Full — Here's Why
Microsoft's May 12, 2026 security update for Windows 11, KB5089549, is failing to install on some PCs with error 0x800f0922 — and the usual fix of clearing space on the C: drive won't help. The...
Clear four root causes for Windows Update halt 0x800f0922: disk, EFI, corruption, or drivers.
Windows Update error 0x800f0922 brings patching to a screeching halt. The update downloads, the installation kicks off, then it rolls back with that cryptic hex code. Frustration mounts, but a...
Windows 11 KB5089573 Ends 20-Year User Folder Name Truncation
After decades of user complaints, Microsoft finally gives Windows 11 installers a simple way to set the C:\Users folder name. The optional May 26, 2026 preview update KB5089573 for Windows 11...
Windows 11 KB5089573 slashes Start, search, Action Center lag by 70% with new thread boost profile
Microsoft dropped the optional KB5089573 preview update on May 26, 2026, bringing a subtle but significant performance tweak to Windows 11 versions 24H2 and 25H2. Under the hood lies a new "low...
Microsoft's May 2026 preview update delivers AI features and a hidden boot-partition warning
On May 26, Microsoft released KB5089573, an optional non-security preview update for Windows 11 versions 24H2 and 25H2. The update moved supported PCs to builds 26200.8524 and 26100.8524...
Windows 11 KB5089549 Update Fails at Reboot with 0x800f0922 Due to Small EFI Partition
Microsoft’s latest Patch Tuesday rollout for Windows 11 has hit a significant snag. Security update KB5089549, delivered on May 12, 2026, triggers an 0x800f0922 error and boot failure on devices...
Windows 11 KB5089549 Update Error 0x800f0922: EFI Partitions Under 10MB Block Installation
Microsoft acknowledged on May 15, 2026, that a recent Windows 11 security update is tripping up a surprising number of devices—not because of code bugs, but because of a storage allocation decision...
KB5089549 Fails on Windows 11 24H2/25H2 as 0x800f0922 Blocks Zero-Day Fix
Microsoft’s May 12, 2026 Patch Tuesday security update KB5089549 is repeatedly failing to install on a growing number of Windows 11 24H2 and 25H2 devices, with affected systems rolling back the...
Windows 11 KB5089549 Fails with 0x800f0922: How to Fix EFI Partition Space and Roll Back
A routine cumulative update for Windows 11 has turned into a headache for many users as Microsoft confirms installation failures tied to insufficient free space on the EFI System Partition (ESP). The...
KB5089549 EFI Space Error 0x800f0922 Blocks Windows 11 24H2/25H2 Patch
Microsoft has acknowledged a significant installation issue with its latest Patch Tuesday update for Windows 11, KB5089549, causing failures on systems with limited free space on the EFI System...
KB5089549 stuck at 35% install on Windows 11 due to EFI partition under 10MB free
Microsoft has confirmed a frustrating installation failure affecting the May 2026 security update for Windows 11. The update, KB5089549, is failing to install on a subset of devices running Windows...
Windows 11 Update KB5089549 Fails with 0x800f0922 Due to Low EFI Partition Space
Microsoft has confirmed that the Windows 11 security update KB5089549, released for versions 24H2 and 25H2, fails during installation on devices with critically low space on the EFI System Partition...