In what marks the tip of an period, Microsoft has launched the Home windows 10 KB5066791 cumulative replace, the ultimate cumulative replace for the working system because it reaches the tip of its help lifecycle.
It must be famous that customers will nonetheless be capable of obtain prolonged safety updates (ESUs) for as much as 1 12 months (customers) and three years (enterprise).
The Home windows 10 KB5066791 replace is obligatory, because it comprises Microsoft’s October 2025 Patch Tuesday safety updates, which handle six zero-day vulnerabilities and 172 different flaws.
Home windows customers can set up this replace by going into Settings, clicking on Home windows Replace, and manually performing a ‘Test for Updates.’
Nonetheless, as this replace is obligatory, it’s going to robotically begin putting in in Home windows when you test for updates. To make this extra manageable, you may schedule a time when your pc is restarted to complete the set up.
Supply: BleepingComputer
After putting in this replace, Home windows 10 22H2 will be up to date to construct 19045.6456, and Home windows 10 21H2 can be up to date to construct 19044.6456.
Home windows 10 customers can even manually obtain and set up the KB5066791 replace from the Microsoft Replace Catalog.
What’s new in Home windows 10 KB5066791
Home windows 10 has formally reached finish of help in the present day, now not receiving updates until prospects and organizations subscribe to prolonged safety updates.
“After October 14, 2025, Microsoft will now not present free software program updates from Home windows Replace, technical help, or safety fixes for Home windows 10,” warns Microsoft.
“Your PC will nonetheless work, however we advocate shifting to Home windows 11.”
Shoppers can enroll in prolonged safety updates to obtain a 12 months of further safety updates, whereas the enterprise can buy as much as three years of prolonged updates.
Nonetheless, Home windows 10 customers within the EMEA are in a position to get free prolonged safety updates for one 12 months.
The whole record of modifications and fixes within the Home windows 10 KB5066791 replace is listed under:
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[Input and Composition]
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Mounted: A problem with the Chinese language Enter Technique Editor (IME). Personal Unicode characters had been proven incorrectly and didn’t meet GB18030 normal.
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Mounted: A problem that impacts USER32 Edit controls. Surrogate pairs seem as empty containers when textual content fields attain their size restrict.
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[Windows Remote Management (WinRM)]
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[Licensing]
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New! This replace introduces a servicing stack replace (SSU) which contains an up to date certificates chain to enhance Azure atmosphere validation. For extra info, see the servicing stack replace part.
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[Fax modem driver]
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[SMBv1 protocol connectivity (known issue)] Mounted: A problem the place you won’t be capable of connect with shared information and folders for those who’re utilizing the Server Message Block (SMB) v1 protocol on NetBIOS over TCP/IP NetBIOS (NetBT). This could occur after putting in replace KB5065429.
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[Autopilot Enrollment Status Page (ESP) (known issue)] Mounted: A problem when utilizing Home windows Autopilot to deploy Home windows 10, model 22H2, to units with the Enrollment Standing Web page (ESP) configured may discover that the ESP would not load through the Out-of-Field Expertise (OOBE).
An entire record of fixes could be discovered within the KB5066791 help bulletin and final month’s KB5066198 preview replace bulletin.
Microsoft states that there are not any identified points with this replace as Microsoft ends its help for the working system.
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