The “June update” in this report refers to Windows 10 updates released on June 9, 2020—not a current Windows update. Microsoft documented that those updates could make the Local Security Authority Subsystem Service (LSASS) fail with error code c0000008, prompting Windows to require a restart. Microsoft’s July 14, 2020 cumulative updates addressed the issue for the affected versions.
Which Windows 10 updates caused the c0000008 error?
The issue was tied to specific June 9, 2020 cumulative updates and Windows versions:
| Windows version | June 9, 2020 update | Build stated by Microsoft |
|---|---|---|
| Windows 10 version 2004 | KB4557957 | OS Build 19041.329 |
| Windows 10 versions 1903 and 1909 | KB4560960 | OS Builds 18362.900 and 18363.900 |
These are historical update identifiers and builds, not current Windows 10 update guidance. The matching report was published June 24, 2020.
What did the error mean?
Microsoft’s notices for both KBs said that LSASS, the Windows security subsystem process lsass.exe, might fail on some devices. The documented message was: “A critical system process, C:WINDOWSsystem32lsass.exe, failed with status code c0000008. The machine must now be restarted.”
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In that incident, the message was associated with a software-update problem. By itself, it did not show that the computer’s hardware needed replacement. Microsoft did not publish an affected-device count in the cited notices, so the available documentation does not establish how common the failure was.
Which updates resolved the documented issue?
Microsoft’s July 14, 2020 release notes identify the following updates as addressing the LSASS failure:
- Windows 10 versions 1903 and 1909: Microsoft’s KB4565483 notes say it addressed the LSASS failure with status code
c0000008following Windows updates released June 9, 2020. - Windows 10 version 2004: Microsoft’s KB4565503 is identified on the KB4557957 support page as the resolution.
These references describe the 2020 fix for those versions. They should not be treated as a universal remedy for a similar message occurring on a different Windows release or at a later date.
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What should you do if you see a similar message now?
A shared error code does not prove that a current failure has the same cause as the 2020 incident. First identify the Windows version and the update associated with the error, then check Microsoft’s current release-health information for that version before uninstalling updates or attempting other repairs.
- Identify the Windows version. Open Settings > System > About and note the Windows edition and version.
- Check update history. Open Settings > Update & Security > Windows Update > View update history. Note the update KB number and date, if shown.
- Compare the details with Microsoft’s current notices. For Windows 10 version 22H2, consult Microsoft’s release-health page. Other versions may have different notices.
- Choose a recovery action based on the matching notice. Do not assume that removing a 2020 KB or installing a 2020 fix addresses a present-day failure.
The contemporaneous June 2020 BetaNews report described uninstalling the affected update through Settings as a workaround while a fix was pending. That was period-specific advice; Microsoft later documented cumulative updates addressing the fault. It is not a general instruction for a current error.
Does this affect Windows 10 users today?
The report concerns an incident from 2020, and standard Windows 10 support ended on October 14, 2025. Microsoft’s lifecycle policies differ for LTSC and LTSB editions. If a Windows 10 device now shows an LSASS restart message, use its exact version, update history and applicable Microsoft release-health guidance to determine the next step; the old incident alone cannot identify the current cause.
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