Johnny Serrano. If you read other posts you gave me a bad answer and you don't resolve my problem. I keep my post open because it seems it help people. Have a nice day
Hyper-V Windows 2022 boot loader error
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Philippe NONORGUES
26
Reputation points
Hello,
I'm trying to install Windows server 2022 (eval version) on Hyper-V (Windows server 2019 version).
I got the UEFI error with the message the Boot loader failed.
I tried with Windows server 2019 iso file and it works.
Few months ago I've installed 2022 Insider version without problem and today I'm not able to do it and receive the same message with the eval version.
Can you tell me is something was changed ?
Thank you
Windows for business | Windows Client for IT Pros | Storage high availability | Virtualization and Hyper-V
Windows for business | Windows Server | User experience | Other
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(249.60000000000002, 47%, 34%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EGS%3C/text%3E%3C/svg%3E)
GANE SARAVANAN 0 Reputation points2024-08-19T19:43:41.1533333+00:00 I've had the same problem. Tried different things and finally this helped
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7 answers
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(217.60000000000002, 76%, 31%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EPN%3C/text%3E%3C/svg%3E)
philippe nonorgues 1 Reputation point2024-07-16T22:40:36.02+00:00 -
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(28.799999999999997, 95%, 12%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJS%3C/text%3E%3C/svg%3E)
Johnny Serrano 0 Reputation points2024-07-17T02:49:48.55+00:00 Well, it certainly helped me so I am very pleased with my own answer and also hope that others will be able to use any of the many solutions provided to help them as well.
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Amar Bhosale 0 Reputation points2025-10-31T19:19:15.9133333+00:00 We can fix this by re-creating the EFI partition:
Boot the server using windows ISO and open command promt:
type diskpart
list disk
sel disk 0
list vol
find EFI partition no, Windows partition
I assume efi is 2
I assume os is C
select vol 2
format fs=fat32 quick label="EFI"
assign letter=V
exit
bcdboot C:\windows /s V: /f UEFI