How to Fix KB5027303 Update Not Installing on Windows 11

Is the KB5027303 update not working, installing, or downloading on Windows 11?

The KB5027303 update brings several new features and improvements to Windows.

It expands the notification badging for Microsoft accounts and provides quick access to important account-related notifications.

It enhances the sharing of local files in File Explorer with Microsoft Outlook contacts, allowing users to email files to themselves.

The update also redesigns the in-app voice access command help page, providing descriptions, examples, and more.

It also includes improvements to Microsoft Defender for Endpoint and enables authentication across Microsoft clouds.

In this guide, you’ll learn how to fix the installation/download issue for the KB5027303 update on Windows 11.

• Fix 1: Run the Update Troubleshooter
• Fix 2: Restart Windows Update and background intelligent transfer service
• Fix 3: Use Windows 11 Installation Assistant
• Fix 4: Use Microsoft Update Catalog
• Fix 5: Reset Windows Update components
• Fix 6: Use the Media Creation Tool

Fix 1: Run the Update Troubleshooter

1. Open the Windows start menu > Settings.
2. System > Troubleshoot > Other troubleshooters.
3. Windows Update > Run > Restart your PC.

Fix 2: Restart Windows Update and background intelligent transfer service

1. Windows search > Services.
2. Windows update > Startup type > Automatic > Apply > OK.
3. Select “Restart the service” for “Windows Update”.
4. Background intelligent transfer service > Startup type > Automatic > Apply > OK.
5. Select “Restart the service” for “Background intelligent transfer service”.
6. Restart your PC.

Fix 3: Use Windows 11 Installation Assistant

1. Go to https://www.microsoft.com/software-download/windows11.
2. Click on “Download Now”.
3. Run the .exe file > Accept and install.

Fix 4: Use Microsoft Update Catalog

1. Go to https://www.catalog.update.microsoft.com/Home.aspx.
2. Search for “KB5027303”.
3. Download the Windows 11 KB5027303 update.
4. Restart your PC.

Fix 5: Reset Windows Update components

Copy these and paste them into the Notepad app:

SC config trustedinstaller start=auto
net stop bits
net stop wuauserv
net stop msiserver
net stop cryptsvc
net stop appidsvc
Ren %Systemroot%\SoftwareDistribution SoftwareDistribution.old
Ren %Systemroot%\System32\catroot2 catroot2.old
regsvr32.exe /s atl.dll
regsvr32.exe /s urlmon.dll
regsvr32.exe /s mshtml.dll
netsh winsock reset
netsh winsock reset proxy
rundll32.exe pnpclean.dll,RunDLL_PnpClean /DRIVERS /MAXCLEAN
dism /Online /Cleanup-image /ScanHealth
dism /Online /Cleanup-image /CheckHealth
dism /Online /Cleanup-image /RestoreHealth
dism /Online /Cleanup-image /StartComponentCleanup
Sfc /ScanNow
net start bits
net start wuauserv
net start msiserver
net start cryptsvc
net start appidsvc

Save the file as “Wufix.bat” > set the location as desktop > All Files > Save.

Run the file as an administrator to restart all the Windows update services and restart your PC.

Fix 6: Use the Media Creation Tool

1. Go to https://www.microsoft.com/en-us/software-download/windows11.
2. Click on “Download Now”.
3. Follow the on-screen instructions.
4. Open the downloaded file.
5. Run the setup file.
6. Follow the on-screen instructions and complete the installation process.

Further reading

How to Fix KB5023778 Update Not Installing on Windows 11

How to Fix KB5022834 Update Not Installing on Windows 10

How to Fix KB5022845 or KB5022497 Update Not Installing on Windows 11