[6 Methods] How to Fix Windows Update Error 0x80070645

Generally, we update Windows from time to time, because some vulnerabilities and errors will be fixed after updating to the latest version. However, during the update process, you may encounter some errors, such as Windows update error 0x8024000d, Windows update error 0x80240020, and error code 0x80070645.

Before starting troubleshooting, you need to find out what causes error code 0x80070645. After searching online, I concluded that it may be due to the following reasons.

• Corrupted or missing system files
• Malware or virus infections
• Driver issues
• Corrupted Windows components and services
• Improper system shutdown

Here are 6 ways to help you solve error 0x80070645 on Windows.

Method 1: Run the Windows Update Troubleshooter

The Windows update troubleshooter is created to address problems that prevent Windows updates. You can run the troubleshooter initially to see if it can resolve the error 0x80070645.

Step 1: Press the Win + I keys together to open Settings and go to Update & Security.

Step 2: In the Troubleshoot tab, click the Additional troubleshooters from the right panel.

Step 3: Choose Windows Update under Get up and running and click Run the troubleshooter.

Method 2: Run SFC and DISM

Corrupted system files might be a cause of the Windows update error 0x80070645. In this situation, running both SFC and DISM scans one after can solve it.

Here are the full steps for you.

Step 1: Open the Search window, type “cmd” in the search box, right-click Command Prompt under Best Match, and then select Run as administrator.

Step 2: In the elevated Command Prompt window, type “sfc /scannow” and press the Enter key.

Step 3: After the process is finished, restart your PC and see if the error is fixed. If not, proceed by initiating a DISM scan. Here are the DISM commands:

• DISM.exe /Online /Cleanup-image /Scanhealth
• DISM.exe /Online /Cleanup-image /Checkhealth
• DISM.exe /Online /Cleanup-image /Restorehealth

Method 3: Check Your Internet Connection

Certain software updates need an internet connection to an online server. If your internet connection is unstable, the error code 0x80070645 may occur. Therefore, it’s advised to ensure your network is stable before proceeding with a Windows update.

Method 4: Disable Antivirus Software

Sometimes, antivirus software may interfere with your activities while you are updating your system. You can temporarily disable it and see if you can update Windows successfully.

Step 1: Right-click the Start icon and choose Task Manager.

Step 2: Navigate to the Startup tab from the top, and find your antivirus software. Then right-click on it to choose Disable.

Step 3: Reboot your computer to see if Windows update works properly.

Method 5: Reset the Windows Update Components

If you encounter Windows update error 0x80070645, it could be due to a problem with the Windows update components. You need to reset the Windows update components.

Step 1: Open Search by pressing the Win + S key and input Command Prompt to run it as an administrator.

Step 2: Type the following commands in the Command Prompt window:

• 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

Method 6: Update Drivers

Outdated drivers can cause various errors on your computer, including the Windows update error 0x80070645. If you suspect that the error 0x80070645 on your PC is related to outdated drivers, you can follow these steps to update them and fix the problem:

Step 1: Press the Win + X keys to select the Device Manager from the menu.

Step 2: In the Device Manager window, expand the Display adapters.

Step 3: Right-click it and select Update driver. Then choose Search automatically for drivers.

Step 4: Next, follow the on-screen instructions to complete the process.

Step 5: Once done, restart your PC and check if the error is fixed.

Bottom Line

This article ends here. This article helps you resolve the Windows update error 0x80070645. If your PC is experiencing this error, you can try the solutions mentioned above one by one.