Question
Issue: How to fix KB5021234 fails to install in Windows 11?
Hello. I tried to install the new KB5021234 update for Windows 11 but the process fails every time I try. Is there anything I can do?
Solved Answer
On December 13, 2022, Microsoft released a new security update for Windows 11 – KB5021234. This update addresses an issue that affects remote networks, specifically an issue that prevents the reconnection to remote networks using DirectAccess. This issue arises when the decryption of a certificate's private key fails, which may be caused by encrypting the DPAPI master key with a wrong value. This failure may also affect VPNs and other 802.1 certificate-based authentications.
However, some people may have issues when trying to install the newest update. There are user reports that KB5021234 fails to install. It is unknown why exactly this may be happening. However, most of the time, Windows updates fail to install because of corrupted files, third-party antivirus interference, or malfunctioning Windows services.
In this guide, you will find 6 steps that should help you fix KB5021234 fails to install in Windows 11. If you want to avoid a lengthy manual troubleshooting process, you can use a maintenance tool like RestoroMac Washing Machine X9. It can automatically fix most system errors, BSODs,[1] corrupted files, registry[2] issues, or clear cookies and cache.[3] Otherwise, follow the step-by-step instructions below.
Method 1. Fix Corrupted System Files
Use Command Prompt commands to repair system file corruption:
- Open Command Prompt as administrator
- Use the following command and press Enter:
sfc /scannow
- Reboot your system
- If SFC returned an error, then use the following command lines, pressing Enter after each:
DISM /Online /Cleanup-Image /CheckHealth
DISM /Online /Cleanup-Image /ScanHealth
DISM /Online /Cleanup-Image /RestoreHealth
Method 2. Disable Third-Party Security Software
Sometimes antivirus software can block legitimate processes mistakenly. You should try disabling your antivirus and trying to run the update again.
Method 3. Run the Update Troubleshooter
- Click the Windows button and select Settings
- Select System from the left pane, then scroll down on the right pane, and click on Troubleshoot
- Click on Other troubleshooters
- Locate the Windows Update troubleshooter and hit the Run button
Method 4. Restart Windows Services
- Type services in the search bar and launch the Services utility
- Find Windows Update in the list
- Double-click on it, set the Startup type to Automatic, and click Apply
- Now click on Restart the Service
- Do the same with Background Intelligent Transfer Service
Method 5. Reset Windows Update Components
- Open the Command Prompt as an Administrator
- Type the following commands one by one and press Enter after each:
-
net stop bits
net stop wuauserv
net stop cryptsvc
Del “%ALLUSERSPROFILE%\Application Data\Microsoft\Network\Downloader\qmgr*.dat”
Ren %Systemroot%\SoftwareDistribution\DataStore DataStore.bak
Ren %Systemroot%\SoftwareDistribution\Download Download.bak
Ren %Systemroot%\System32\catroot2 catroot2.bak
sc.exe sdset bits D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;BA)(A;;CCLCSWLOCRRC;;;AU)(A;;CCLCSWRPWPDTLOCRRC;;;PU)
sc.exe sdset wuauserv D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;BA)(A;;CCLCSWLOCRRC;;;AU)(A;;CCLCSWRPWPDTLOCRRC;;;PU)
cd /d %windir%\system32
regsvr32.exe atl.dll
regsvr32.exe urlmon.dll
regsvr32.exe mshtml.dll
regsvr32.exe shdocvw.dll
regsvr32.exe browseui.dll
regsvr32.exe jscript.dll
regsvr32.exe vbscript.dll
regsvr32.exe scrrun.dll
regsvr32.exe msxml.dll
regsvr32.exe msxml3.dll
regsvr32.exe msxml6.dll
regsvr32.exe actxprxy.dll
regsvr32.exe softpub.dll
regsvr32.exe wintrust.dll
regsvr32.exe dssenh.dll
regsvr32.exe rsaenh.dll
regsvr32.exe gpkcsp.dll
regsvr32.exe sccbase.dll
regsvr32.exe slbcsp.dll
regsvr32.exe cryptdlg.dll
regsvr32.exe oleaut32.dll
regsvr32.exe ole32.dll
regsvr32.exe shell32.dll
regsvr32.exe initpki.dll
regsvr32.exe wuapi.dll
regsvr32.exe wuaueng.dll
regsvr32.exe wuaueng1.dll
regsvr32.exe wucltui.dll
regsvr32.exe wups.dll
regsvr32.exe wups2.dll
regsvr32.exe wuweb.dll
regsvr32.exe qmgr.dll
regsvr32.exe qmgrprxy.dll
regsvr32.exe wucltux.dll
regsvr32.exe muweb.dll
regsvr32.exe wuwebv.dll
netsh winsock reset
net start bits
net start wuauserv
net start cryptsvc
- Wait for the process to finish and restart your PC
Method 6. Repair Install Windows
- Visit the official Microsoft website to download Windows 11 Installation Media
- Run the Media Creation Tool and select Create Installation Media for another PC
- Select your USB drive
- Let the Process complete of writing the Installation files to the USB drive
- Click Finish
- On the PC you wish to upgrade, Press Windows + E to open the File Explorer
- Open the Removable drive and click Setup.exe
- Accept the license terms on the next screen
- Confirm the Upgrade options – Files, apps and Settings are kept
- Click Install, and the upgrade should start
Repair your Errors automatically
ugetfix.com team is trying to do its best to help users find the best solutions for eliminating their errors. If you don't want to struggle with manual repair techniques, please use the automatic software. All recommended products have been tested and approved by our professionals. Tools that you can use to fix your error are listed bellow:
Prevent websites, ISP, and other parties from tracking you
To stay completely anonymous and prevent the ISP and the government from spying on you, you should employ Private Internet Access VPN. It will allow you to connect to the internet while being completely anonymous by encrypting all information, prevent trackers, ads, as well as malicious content. Most importantly, you will stop the illegal surveillance activities that NSA and other governmental institutions are performing behind your back.
Recover your lost files quickly
Unforeseen circumstances can happen at any time while using the computer: it can turn off due to a power cut, a Blue Screen of Death (BSoD) can occur, or random Windows updates can the machine when you went away for a few minutes. As a result, your schoolwork, important documents, and other data might be lost. To recover lost files, you can use Data Recovery Pro – it searches through copies of files that are still available on your hard drive and retrieves them quickly.
Gabriel E. Hall is an expert troubleshooter who has been working in the information technology industry for years.
- ^ Chris Hoffman. Everything You Need To Know About the Blue Screen of Death. Howtogeek. Technology Magazine.
- ^ Windows Registry. Wikipedia, the free encyclopedia.
- ^ Difference between Cache and Cookies. Geeksforgeeks. IT Education.
