Insider KB5077221 Windows 11 Insider Canary build 28020.1611 (26H1) - Feb. 12

Brink · Feb 14, 2026

If this was via Windows Update, you could try updating to the latest build by upgrading with an ISO instead.

fg2001gf11F · Feb 14, 2026

garlin said:
No, I meant in your original screenshot, you selected the Catalog cert (bottom one), instead of the Embedded Signature cert (top one) to view.

Is this what you are looking for?
The top ones show Microsoft Development PCA 2014 on both WinRE and Windows syatem.

Imhelpingyoubro · Feb 14, 2026

Imhelpingyoubro · Feb 14, 2026

Brink said:
Hello @Imhelpingyoubro,

If this was via Windows Update, you could try updating to the latest build by upgrading with an ISO instead.

Okay, once I do it, I'll let you know how it went.

garlin · Feb 14, 2026

fg2001gf11F said:
Is this what you are looking for?

Yep. I checked and MS Development PCA 2014 isn't on my 25H2 cert store. And you have the "Install Certificate" button which confirms it's not on your cert store. So I'm guessing the wrong files are floating out there.

fg2001gf11F · Feb 14, 2026

garlin said:
Yep. I checked and MS Development PCA 2014 isn't on my 25H2 cert store. And you have the "Install Certificate" button which confirms it's not on your cert store. So I'm guessing the wrong files are floating out there.

View attachment 163331

According to Microsoft, PCA 2014 is common, but not all OEM vendors are updated to handle that.
Looks like only my Dell PCs XPS 8930 and XPS 8940 have the problem with the Microsoft Development PCA 2014 when booting WinRE.
The GMKtec mini M2 and K3 are fine with that same PCA 2014.

garlin · Feb 14, 2026

fg2001gf11F said:
According to Microsoft, PCA 2014 is common, but not all OEM vendors are updated to handle that.
Looks like only my Dell PCs XPS 8930 and XPS 8940 have the problem with the Microsoft Development PCA 2014 when booting WinRE.
The GMKtec mini M2 and K3 are fine with that same PCA 2014.

Can you run my UEFI check script on one Dell, and one GMKtec? I'm not interesting in onlythe list of DB & DBX certs. I know some older Dells throw in an additional MS cert that newer PC's don't include.

fg2001gf11F · Feb 14, 2026

garlin said:
Can you run my UEFI check script on one Dell, and one GMKtec? I'm not interesting in onlythe list of DB & DBX certs. I know some older Dells throw in an additional MS cert that newer PC's don't include.

This one is on Dell XPS 8930:

This one is on GMKtec K3:

The other Dell XPS 8940:

garlin · Feb 14, 2026

Dell has the SkuSiPolicy.p7b, GMKTec doesn't.
SkuSiPolicy.p7b was an early workaround to boot file security, (before MS promoted the current Secure Boot method).

Code:

mountvol S: /s
ren S:\EFI\Microsoft\Boot\SkuSiPolicy.p7b S:\EFI\Microsoft\Boot\RENAMED_SkuSiPolicy.p7b
mountvol S: /d

fg2001gf11F · Feb 14, 2026

garlin said:
Dell has the SkuSiPolicy.p7b, GMKTec doesn't.
SkuSiPolicy.p7b was an early workaround to boot file security, (before MS promoted the current Secure Boot method).

Code:

mountvol S: /s ren S:\EFI\Microsoft\Boot\SkuSiPolicy.p7b S:\EFI\Microsoft\Boot\RENAMED_SkuSiPolicy.p7b mountvol S: /d

Is it this name?

garlin · Feb 14, 2026

Now I'm more confused, after noticing the 2nd Dell's output.

fg2001gf11F · Feb 14, 2026

garlin said:
Now I'm more confused, after noticing the 2nd Dell's output.

Edit:
That made a bigger mess, I had to disable secure boot and restore a backup. Then re-enable secure boot.
Looks like renaming that policy was causing a bigger problem.

Josoft · Feb 15, 2026

Edizione Windows 11 Pro Insider Anteprima
Versione 26H1
Data installazione: ‎14/‎02/‎2026
Dati di scadenza della valutazione ‎11/‎08/‎2026 20:09
Costruisci il sistema operativo 28020.1611
Feature Pack Pacchetto di esperienze per funzionalità Windows 1000.26100.330.0

Bree · Feb 15, 2026

Imhelpingyoubro said:

"My system is on base build 10.0.28800.0 (confirmed in setupact.log)"

There is no official 28800 build that I or Google can find. What does your Winver show?

Google said:
AI Overview

Based on the provided search results, there is no widely known current Windows operating system version with the specific build number "28800".
The number 28800 appears in the context of PC hardware and technical settings rather than a OS build version

Google Search

SmokeMe · Feb 15, 2026

My WU install on a external SSD went smooth,
it took 45 minutes from start of DL (7 items) to restart to desktop.

Imhelpingyoubro · Feb 16, 2026

Bree said:
"My system is on base build 10.0.28800.0 (confirmed in setupact.log)"

There is no official 28800 build that I or Google can find. What does your Winver show?

Google Search

Brink said:
Hello @Imhelpingyoubro,

If this was via Windows Update, you could try updating to the latest build by upgrading with an ISO instead.

I'll tell you, this update gave me a stomach ache. All methods failed, Rufus and running setup.exe on the working system also did not work, the installation stopped at 68%. I even tried with a minimum amount of connected hardware and the LAN cable disconnected, and in the end, when Gemini - yes, I changed the model because Copilot has some absurd limitations. After reading the error logs, Gemini specifically informed me that I did not have enough space in the EFI system partition, but as soon as I cleared the fonts, other errors appeared and the installation did not even reach 68%. Gemini told me to make registry fixes using CMD based on these errors, but I had had enough. My system was so corrupted that I couldn't even enter the BIOS! I didn't want to wait for the twentieth time for the installation to reach 68% and freeze. Fortunately, the automatic repair started just in time, and I was able to choose to boot from USB when I was mentally prepared for a clean format and had moved all my important files to a second hard drive. Yes, it was the best decision I made. Everything went smoothly, which was good because I hadn't formatted this computer in 4 years! How time flies! Imagine that all the complications that were available in Canary went through my system, so at some point it had to freeze! Oh dear, there was so much junk in there! Now my computer works like a dream, so the conclusion is that it's better to start over than to force something that could make the situation even worse. @fg2001gf11F

fg2001gf11F said:
View attachment 163351

Edit:
That made a bigger mess, I had to disable secure boot and restore a backup. Then re-enable secure boot.
Looks like renaming that policy was causing a bigger problem.

Thank you for your help, and best regards to everyone and this wonderful forum.

Altob16916 · Feb 16, 2026

Update my PC with wu almost 2 hours

my laptop with UUP damp 50 minute's i try my PC with UUP Damp but delevery service for microsoft streaming not responce Error

fg2001gf11F · Feb 16, 2026

Altob16916 said:
Update my PC with wu almost 2 hours my laptop with UUP damp 50 minute's i try my PC with UUP Damp but delevery service for microsoft streaming not responce Error

UUP-dump.

Altob16916 · Feb 16, 2026

fg2001gf11F said:
UUP-dump.

iam also try iso and iam happy when kb... with size 1.0Gbe appear and kb...2.0GBe also so this size enough for my shadow copy for back up but same error with UUP dump(windows straming not respon) when WU finish i try to backup shadow copy error

my laptop back up smooth

cute two · Feb 16, 2026

Altob16916 said:
Update my PC with wu almost 2 hours my laptop with UUP damp 50 minute's i try my PC with UUP Damp but delevery service for microsoft streaming not responce Error

View attachment 163476

When did you do clean install ? With which build ?

Insider KB5077221 Windows 11 Insider Canary build 28020.1611 (26H1) - Feb. 12

What’s new in Canary Build 28020.1611​

Changes and Improvements gradually being rolled out with toggle on*​

[Built-in Sysmon]​

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[General]​

Reminders for Windows Insiders in the Canary Channel​

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Similar threads

What’s new in Canary Build 28020.1611

Changes and Improvements gradually being rolled out with toggle on*

[Built-in Sysmon]

[Windows Share]

[General]

Reminders for Windows Insiders in the Canary Channel