KB2267602 Fails to Install: Here Is How to Fix It!

Solve the problem of installing Windows Defender update KB2267602 failed

KB2267602 is a security update for Windows Defender, designed to fix vulnerabilities and threats in Windows systems. Some users reported that KB2267602 could not be installed. This article will explain how to resolve this issue.

Microsoft released KB2267602 as a security update for Windows Defender to help protect Windows 10 or Windows Server computers from malware and other security threats. However, some users reported that KB2267602 installation failed.

Next, let’s take a look at how to solve the problem of KB2267602 failure installation.

Method 1: Uninstall third-party antivirus software

If you cannot install KB2267602, it may be caused by a conflict between Windows Defender and third-party antivirus software. If you have a third-party antivirus software installed on your computer, it is recommended to uninstall it to resolve this error. You can uninstall it through the control panel or settings.

Method 2: Run the Windows Update Troubleshooter

The Windows Update Troubleshooter is a built-in tool for Windows 11/10 that helps you detect and fix errors related to corrupt updates or other Windows update issues. You can try running this troubleshooter to fix the "KB2267602 installation failed" issue. The specific steps are as follows:

Step 1: Press Windows I key to open the Settings application.

Step 2: Go to System > Click Troubleshooter .

Step 3: Click Other Troubleshooter Expand All Troubleshooters, and then click Run next to Windows Update .

Step 4: The troubleshooter will scan for errors related to Windows Update Components. If you find any fixable errors, click Apply this fix and follow the on-screen instructions to complete the fix.

Method 3: Reset Windows Update Cache

If you are having problems running Windows Update, it may be that there is a problem with the update file, or the file is not completely cleared for download or is corrupted. You can reset the Windows update cache.

Step 1: Type a command prompt in the search menu. Then right-click it and select Run as administrator to open it.

Step 2: Enter the following commands one by one:

• net stop wuauserv
• net stop cryptSvc
• net stop bits
• net stop msserver

Step 3: Next, run the following commands one by one:

• ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
• ren C:\Windows\System32\catroot2 Catroot2.old

Method 4: Run disk cleaning

Disk cleaning is integrated in almost all versions of Windows. Disk Cleanup can easily delete unnecessary files on your computer and save space. Therefore, this solution is to perform a disk cleanup. The steps are as follows:

Step 1: Press Windows S key at the same time to open the search. Then type Disk Cleanup and select the first option.

Step 2: Select the drive with Windows installed and click OK to continue.

Step 3: Click the Clean System Files option, and then click OK to start cleaning.

Method 5: Manually install KB4577266 update

KB4577266 is a service stack update for Windows 10. If for some reason your system does not have it, you should download and install it to see if it resolves the issue.

Step 1: Open your browser and access the Microsoft Update Directory.

Step 2: Search for KB4577266 update.

Step 3: Find the correct update based on your operating system version and click Download .

Step 4: Follow the on-screen instructions to install the update. Restart your system.

Summarize

If you encounter the "KB2267602 installation failed" issue on Windows 11/10, please try the above solution to resolve this issue easily. We recommend that you use MiniTool ShadowMaker Free to back up important data to better protect your computer.

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