Windows Update error 0x80070437 can interrupt critical system updates, often displaying the message: There were some problems installing updates, but we'll try again later. If you keep seeing this and want to search the web or contact support for information, this may help: (0x80070437). This error typically indicates a problem with service permissions or misconfigured system services, especially the Windows Defender Firewall. Addressing this issue restores your ability to install updates and keeps your system secure.

Enable and Configure Windows Defender Firewall Service

The most common cause of error 0x80070437 is a disabled or misconfigured Windows Defender Firewall service. Ensuring this service is running under the correct account and set to start automatically is crucial for Windows Update to function properly.

Step 1: Press Windows + R to open the Run dialog. Type services.msc and press Enter to launch the Services window.

Step 2: Locate Windows Defender Firewall in the list. Double-click it to open its properties.

Step 3: Go to the Log On tab. Select This account and enter Local Service as the account name. If your system is password-protected, enter your password twice. Click Apply.

Step 4: Switch to the General tab. Set Startup type to Automatic. Click Start if the service is not running, then click OK.

Correcting these settings ensures the Firewall service uses the right permissions and is available for Windows Update operations.

Run the Windows Update Troubleshooter

Windows includes a built-in troubleshooter that detects and addresses common update issues. Running this tool can resolve configuration problems or provide guidance on further steps.

Step 1: Open Settings by pressing Windows + I. Navigate to Update & Security > Troubleshoot > Additional troubleshooters.

Step 2: Select Windows Update from the list and click Run the troubleshooter.

Step 3: Follow the on-screen instructions. The troubleshooter will attempt to detect and fix problems. Restart your computer when prompted and check if the error persists.

Reset Windows Update Components

Corrupted update components can block updates and trigger error 0x80070437. Resetting these components removes problematic files and restarts essential services, allowing updates to proceed.

Step 1: Open the Run dialog with Windows + R, type cmd, then press Ctrl + Shift + Enter to run Command Prompt as administrator.

Step 2: Enter the following commands one at a time, pressing Enter after each:

net stop wuauserv
net stop cryptSvc
net stop bits
net stop msiserver
ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
ren C:\Windows\System32\catroot2 Catroot2.old
net start wuauserv
net start cryptSvc
net start bits
net start msiserver

Step 3: Close Command Prompt and restart your computer. This process removes cached update files and reinitializes update services, resolving many update-related errors.

Check and Repair System Files

System file corruption may prevent services from running correctly, causing update failures. Using built-in tools like System File Checker (SFC) and Deployment Imaging Service and Management Tool (DISM) can identify and repair these issues.

Step 1: Open Command Prompt as administrator.

Step 2: Run the following command to scan and repair system files:

sfc /scannow

Step 3: After the scan completes, restart your PC. If the error remains, open Command Prompt as administrator again and run:

DISM /Online /Cleanup-Image /RestoreHealth

Step 4: Allow the process to finish, then restart your device. These commands repair missing or damaged system files that could interfere with update processes.

Free Up Disk Space

Insufficient storage can prevent Windows from downloading or installing updates. Verifying available disk space and clearing unnecessary files can remove this obstacle.

Step 1: Open Settings and go to System > Storage to view disk usage.

Step 2: Use the built-in Disk Cleanup tool by searching for Disk Cleanup in the Start menu. Select your system drive and follow prompts to remove temporary files, system cache, and other unneeded items.

Making sure you have enough free space allows Windows Update to download and apply updates successfully.

Manually Download and Install Updates

If typical update methods fail, manually installing updates can bypass certain service-related issues.

Step 1: Go to Settings > Update & Security > Windows Update > View update history to identify the failed update's KB number.

Step 2: Visit the Microsoft Update Catalog and search for the relevant KB number.

Step 3: Download the update file matching your Windows version and system architecture, then run the installer to apply the update directly.

Addressing error 0x80070437 in Windows 11 restores update functionality and keeps your system protected. Regularly checking service configurations and system health helps avoid future update interruptions.