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Secure Boot Windows Production PCA 2011 certificate expiresWindows · 19 Oct 2026
The Microsoft Windows Production PCA 2011 certificate that signs the Windows boot loader expires. Make sure devices have the 2023 Secure Boot certificates and updated boot manager so they keep receiving boot security fixes.
In short: this took effect on 19 Oct 2026. This date has passed.
What to do
- Read the official notice: Microsoft source ↗.
- Add every Microsoft deadline to your calendar: subscribe to the deadlines calendar.
Other upcoming Windows deadlines
- 10 Nov 2026 Windows 11 23H2 Enterprise and Education end of servicing
- 12 Jan 2027 Windows Server 2016 end of extended support
- 12 Jan 2027 Windows 10 Enterprise LTSC 2021 support ends
- 12 Oct 2027 Windows 10 consumer ESU programme ends
- 12 Oct 2027 Windows 11 24H2 Enterprise and 25H2 Home/Pro servicing ends
- 10 Oct 2028 Windows 11 25H2 Enterprise and Education servicing ends
Sources