Home windows 11 replace is breaking some PCs with boot and BitLocker points

A current Home windows 11 replace is inflicting important issues for some customers throughout system startup and in on a regular basis use. As reported by Home windows Newest, the June replace KB5094126 (Construct 26200.8655), which rolled out on June ninth 2026, is inflicting boot failures, blue screens, and BitLocker restoration loops on sure units.

The replace is taken into account essential as a result of, in keeping with Microsoft, it patches round 200 safety vulnerabilities, together with a number of important flaws and zero-day exploits. It additionally introduces new options, resembling a low-latency profile and the related efficiency enhancements.

PCs now not boot or find yourself in BitLocker Restoration

Following set up, some customers report that Home windows 11 now not begins usually. As an alternative, they encounter blue screens or the BitLocker restoration display, which requires entry of the restoration key. (The same situation can also be affecting some Home windows 10 customers, though for various causes).

In keeping with Home windows Newest, enterprise units from numerous producers, together with HP and Dell, look like affected. These talked about embody:

• HP EliteBook 840 G10
• HP ProBook 460 G11
• HP Have interaction One Professional 15.6 G2 AiO
• HP ZBook
• Dell Precision (together with 7530)

In some circumstances, units get caught in a boot loop and are troublesome to revive to regular operation.

Safe Boot and EFI partition

In keeping with Home windows Newest, the issue is probably going associated to adjustments in Safe Boot and the EFI system partition.

The replace refreshes Safe Boot certificates and writes new boot parts. On programs with very small EFI partitions (generally as little as 100 MB), there will not be sufficient free area accessible. Home windows occasion logs reportedly comprise TPM-WMI errors together with inadequate area within the EFI partition.

HP programs could also be particularly susceptible, as firmware and restoration information are generally saved within the EFI partition and take up additional area.

Within the worst circumstances, Safe Boot could block the system from beginning, or Home windows could show error code 0xc0430001 and enter BitLocker restoration.

Workaround

Affected customers report that the issue can generally be circumvented by making a change within the BIOS:

• Have your BitLocker restoration key prepared
• Open the BIOS/UEFI (on many HP units, press Esc throughout startup)
• Disable Safe Boot
• Begin Home windows and permit the replace to run via utterly
• Then re-enable Safe Boot

It’s additionally really helpful that you just replace the BIOS or UEFI to the newest model, as outdated firmware may additionally be an element, in keeping with the report.

OneDrive and cloud providers partially disrupted

After putting in KB5094126, some customers report points with OneDrive after putting in KB5094126.

OneDrive could now not open accurately from File Explorer, and entry via the sidebar or system tray could change into unresponsive. Clicking on the cloud storage icon generally produces no response.

In keeping with Home windows Newest, Dropbox and iCloud Drive have additionally been affected in remoted circumstances, although stories are far much less frequent.

The information themselves stay accessible, for instance via the direct consumer folder. The difficulty seems to have an effect on File Explorer integration.

Phrase integration and desktop customizations

The replace can also be reported to disrupt the mixing of Microsoft Phrase with third-party software program in sure enterprise environments. This primarily impacts specialised purposes within the medical and accounting sectors that use Phrase within the background for doc creation.

Phrase itself continues to perform, however automated or embedded workflows could generally fail.

Microsoft has additionally made adjustments to the desktop.ini file. Consequently, personalized folder views or icons could now not show accurately if the file is classed as untrusted.

Microsoft has not but made an official assertion

These points haven’t but been confirmed by Microsoft. Nevertheless, in keeping with Home windows Newest, in addition to stories within the Suggestions Hub and on Reddit, stories from affected customers are mounting.

It stays unclear when Microsoft will launch a repair or an official assertion.