Server 2022 - Lost UEFI Boot - boots from Legacy

[garethEds]

Afternoon All,

 

Following an issue with one of our HyperV servers, it seems the box has lost the ability to UEFI boot - with the error message telling me it cannot find a UEFI bootable hard drive. Never seen this before and our second server is still working fine. However - switching to a legacy boot works and Server 2022 boots up fine.

 

DOes anyone have any ideas why this would have happened?

 

Many thanks

 

Gareth

[BOOT]

Probably to do with the April 2024 Windows Updates - there were Secure Boot certificate changes. Probably the host and guests are not at the same update point.

[garethEds]

Probably to do with the April 2024 Windows Updates - there were Secure Boot certificate changes. Probably the host and guests are not at the same update point.

 

Hi there - I've not touched the guests. I moved them to another server whilst trying to sort this out.

 

Server is now on 21H2 20348.2402 yet will still not recognise the UEFI partition/boot.

 

Gareth