Quick Summary
Error code 0x8007065b, also known as ERROR_SXS_XML_E_BAD_PROLOG, typically indicates an issue with the component store or corrupted system files during installation or updates. This often leads to installation failures due to problems with XML parsing or invalid XML prologues.
Common Causes
- Corrupted System Files: Missing or damaged system files required for the installation process can cause the installer to fail with the 0x8007065b error. This may be due to disk errors, incomplete updates, or malware infections.
- Component Store Corruption: The component store, which is used to manage system files and updates, can become corrupted. This corruption may prevent the installer from accessing or writing necessary files, resulting in an installation failure.
- Conflicting Software: Incompatible software or security programs can interfere with the installation process. These conflicts can block file access or modify system settings, leading to the 0x8007065b error.
- Insufficient Permissions: The user account may lack the necessary administrative privileges to install the software. Restricted access to system resources or directories can result in installation failures.
Step-by-Step Fixes
Method 1: Run System File Checker (SFC)
Step 1: Open Command Prompt as an administrator. Search for 'cmd' in the start menu, right-click on 'Command Prompt', and select 'Run as administrator'.
Step 2: Type 'sfc /scannow' and press Enter.
Step 3: Wait for the scan to complete. This process may take some time. If any errors are found, they will be automatically repaired.
Step 4: Restart your computer after the scan is finished.
Method 2: Use DISM to Repair Windows Image
Step 1: Open Command Prompt as an administrator (see instructions in Method 1).
Step 2: Type the following command and press Enter: 'DISM /Online /Cleanup-Image /RestoreHealth'.
Step 3: Wait for the process to complete. This may take a considerable amount of time.
Step 4: Restart your computer after the repair is finished.
Method 3: Temporarily Disable Antivirus Software
Step 1: Temporarily disable your antivirus or security software.
Step 2: Try running the installer again.
Step 3: If the installation succeeds, re-enable your antivirus software.
Important: Ensure you re-enable your antivirus software immediately after testing.
Method 4: Run the Installer as Administrator
Step 1: Locate the installer file.
Step 2: Right-click on the installer file and select 'Run as administrator'.
Step 3: Follow the on-screen instructions to complete the installation.
Method 5: Clean Boot Windows
Step 1: Press Windows key + R, type 'msconfig' and press Enter.
Step 2: In the System Configuration window, go to the 'Services' tab.
Step 3: Check the box 'Hide all Microsoft services' and then click 'Disable all'.
Step 4: Go to the 'Startup' tab and click 'Open Task Manager'.
Step 5: In Task Manager, disable all startup items.
Step 6: Close Task Manager and click 'Apply' and 'OK' in the System Configuration window.
Step 7: Restart your computer and try running the installer again.
Step 8: After troubleshooting, revert the changes by enabling services and startup items again.