[Bug 2031386] Re: dual boot: upgrade to 23.10 breaks windows 11 boot. "Digital signature for this file couldn't be verified"

[Launchpad Bug Tracker]

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

** Changed in: grub2 (Ubuntu)
       Status: New => Confirmed

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

Status in grub2 package in Ubuntu:
  Confirmed

Bug description:
  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

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