Multiple issues with Win11 KB5028185 and how to fix them

Windows 11 22H2 Cumulative Update released on July 11, 2023 KB5028185  (OS Build 22621.1992) has been installed and several issues have been reported.

Although this was expected, many problems still occurred.

Bug information for KB5028185

1. Loss of internet connection
2. Your PC runs slowly
3. Settings takes a long time to open or can't be opened
4. Explorer (folder) takes a long time to open or cannot be opened
5. Task Manager takes a long time to open, or an error occurs and it cannot be opened.
6. Blue Screen of Death "Inaccessible Boot Device" Error Message Appears and Unable to Boot
7. SSD connected via SATA USB conversion cable is not recognized
8. Installation takes a long time (more than half a day)
9. Takes a long time to start up after installation

approach

1. If you lose your internet connection

If you are unable to connect to the Internet, the steps on the following page may quickly resolve the issue.

What to do if you can't connect to the Internet in Windows 10/11

2023 / 07 / 15:

Please try this first.

Solved! Win11 KB5028185 Internet connection is not possible and is interrupted

2-5. If your PC runs slowly

If you experience these symptoms, try restarting the computer again without performing any operations.

It seems that your PC may run slower the first time you start it after installing KB5028185.

Make sure to reboot instead of shutting down and starting up.

2023 / 07 / 17:

If there is no improvement 7 Try pausing and uninstalling Windows Update as described in and see what happens.

Alternatively, updating the chipset driver may improve the situation.

What is a chipset driver? How does it improve your PC's performance? How to update and check it in Windows 11

6. If you receive a blue screen with the error "Inaccessible Boot Device" and are unable to boot

If you are unable to boot due to the blue screen error "Inaccessible Boot Device", please refer to the following page to open the Windows Recovery Environment (WinRE).

From here you can perform a Startup Repair or reset your PC.

How to open the Recovery Environment (WinRE) in Windows 11

Also, enabling the "F8" key and "Last Known Good Configuration" can be useful if your PC cannot be started.

• [Bring back the old F8 key] Steps to start Safe Mode in Win11/Win10
• How to display the "Last Known Good Configuration" when starting up Windows 10/Win11

If you are planning to install KB5028185, please keep in mind the following main reasons for the blue screen "Inaccessible Boot Device" error:

• Corrupted or missing system files
  If the KB5028185 update corrupts system files, you may see a blue screen error message saying "Inaccessible Boot Device."
  The reason why system files may be corrupted during an update may be due to application conflicts.
• ApplicationConflict
  Third-partySecurity softwareThis is affected by software that modifies system files, such as "Explorer Patcher."
  When updating, you may be able to update without any problems if you pause your security software and uninstall programs such as Explorer Patcher.
  Many problems have been reported in the past, especially in environments where "ExplorerPatcher" or "StartAllBack" are installed.
• Viruses, etc.
• Other Information
  When updating, disconnecting external devices such as USB may help avoid issues.
  KB5028185 has a problem where an SSD connected via a SATA USB conversion cable is not recognized.

7. If the SSD connected via a SATA USB conversion cable is not recognized

If your computer does not recognize an SSD connected via a SATA USB conversion cable after installing KB5028185, the solution may be found in the following page.

What to do if your external HDD, SSD, or USB memory stick is not recognized

If that doesn't work, uninstall KB5028185 and pause updates.

• [Solved] Can't uninstall Windows updates? A detailed explanation of the causes and solutions
• How to Pause Windows Update on Win10/Win11

2023 / 07 / 17:

Updating the chipset driver may improve the situation.

What is a chipset driver? How does it improve your PC's performance? How to update and check it in Windows 11

8. If installation takes a long time (more than half a day)

In some environments, Windows Update may take more than half a day to complete.

It is not a good idea to force quit the app in the middle of an update, but first wait 24 hours, and if it still doesn't finish, force quit it.

If you are still unable to start the program,Windows Recovery Environment (WinRE)" to recover.

9. If it takes a long time to start up after installation

As with the above, the update may not be complete, so if you are unable to launch the app for too long, we recommend that you force quit it.

■1. If you lose your internet connectionmay be related.