dual boot: upgrade to 23.10 breaks windows 11 boot. "Digital signature for this file couldn't be verified"

[Troels Freud-Magnus]

i upgraded ubuntu. then wnated to log into windows. was met with the error and following code : 0xc0000428.
thought it was windows itself so restored windows, reinstalled ubuntu upgraded to 23.10 which made windows unusable again.

ProblemType: Bug
DistroRelease: Ubuntu 23.10
Package: ubuntu-release-upgrader-core 1:23.10.5
ProcVersionSignature: Ubuntu 6.3.0-7.7-generic 6.3.5
Uname: Linux 6.3.0-7-generic x86_64
ApportVersion: 2.27.0-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: pass
CrashDB: ubuntu
CrashReports:
 600:0:0:428197:2023-08-15 10:35:37.182500218 +0200:2023-08-15 10:35:37.146499749 +0200:/var/crash/memtest86+.0.crash
 640:1000:115:18617210:2023-08-15 11:20:07.898064318 +0200:2023-08-15 11:20:03.158078847 +0200:/var/crash/_opt_google_chrome_chrome.1000.crash
CurrentDesktop: ubuntu:GNOME
Date: Tue Aug 15 11:32:33 2023
InstallationDate: Installed on 2023-08-15 (0 days ago)
InstallationMedia: Ubuntu 23.04 "Lunar Lobster" - Release amd64 (20230418)
PackageArchitecture: all
ProcEnviron:
 LANG=en_US.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 TERM=xterm-256color
 XDG_RUNTIME_DIR=<set>
SourcePackage: ubuntu-release-upgrader
Symptom: release-upgrade
UpgradeStatus: Upgraded to mantic on 2023-08-15 (0 days ago)
VarLogDistupgradeXorgFixuplog:
 INFO:root:/usr/bin/do-release-upgrade running
 INFO:root:No xorg.conf, exiting

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Mate Kukri (mkukri)]

I believe 24.04 and 24.10's GRUBs can chainload windows, even with SB enabled.