How to resolve error code 0x80070003: Invalid path in Windows 8

There are several methods to resolve the error code 0x80070003 in Windows 8:

1. Run the Windows Update Troubleshooter: Head to Control Panel > Troubleshooting > System and Security > Fix problems with Windows Update. Adhere to the on-screen prompts to finish the troubleshooting process.
2. Rename the Software Distribution Folder: Navigate to C:\Windows\SoftwareDistribution and rename the folder to SoftwareDistribution.old. Then, restart your computer and attempt to update again.
3. Inspect your antivirus software: Occasionally, antivirus programs can obstruct Windows updates. Temporarily disable your antivirus software and try updating once more.
4. Check your internet connection: Ensure your internet connection is stable and robust enough to download updates.
5. Use the System File Checker: Launch Command Prompt as an administrator, type 'sfc /scannow' and press Enter. This will inspect your system files and repair any corrupted files.
6. Reset Windows Update Components: Open Command Prompt as an administrator and enter the following commands sequentially:

    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

After that, restart your computer and try updating again.