Microsoft releases Windows 10 KB5122878 extended security update
Microsoft shipped Windows 10 ESU update KB5122878, delivering the record September 2026 Patch Tuesday fixes, including patches for two actively exploited zero-days.
Microsoft released KB5122878 for Windows 10 Enterprise LTSC and ESU customers, moving builds 19045/19044 to .7725 with security and bug fixes. The update carries this month's record September 2026 Patch Tuesday set, which fixed 966 Microsoft vulnerabilities including two actively exploited zero-day flaws. It also fixes BitLocker recovery-key prompts and Remote Desktop audio redirection, and updates Secure Boot certificate rollout and Morocco time zone data. Microsoft reports no known issues with the update.
- Includes September 2026 Patch Tuesday fixes for 966 vulnerabilities, two actively exploited
- Applies to Windows 10 Enterprise LTSC and ESU program enrollees
- Fixes BitLocker recovery key prompt issue and Remote Desktop audio redirection
- No known issues reported; installs via Windows Update
From the original article
2 min read at bleepingcomputer.com
Microsoft has released the Windows 10 KB5122878 extended security update, which includes this month's record-breaking September 2026 Patch Tuesday fixes, along with a few bug fixes. [...]
By Lawrence Abrams · bleepingcomputer.com
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