What's the correct method to solve ERROR_UNABLE_TO_CLEAN error codes?
ERROR_UNABLE_TO_CLEAN normally appears when your computer crashes and freezes to a certain extent. That will seriously influence the use of the PC, so we have to study how to handle it.
This will also download and fix ERROR_UNABLE_TO_CLEAN FREE of charge
The most common ERROR_UNABLE_TO_CLEAN error that appears on a Windows-based computer is following:
"Cannot register ERROR_UNABLE_TO_CLEAN."
This error may cause thatcomputer crash and run slowly, software not run, game not run.
    The issue may come to you because of many reasons such as wrong registry entries, system configuration error or as a result of miscommunication between the computer and the Automatic update service.
Manual Method
Step 1:
Temporarily Disable Windows Firewall Setting
  • Type Windows Firewall in the Start menu search box
  • Click on Windows Firewall.
  • Click on "Turn Windows Firewall On or Off"
  • In Private network Setting, select "Turn off Windows firewall (not recommended)"
  • Do the same for Public Network Setting.Disable Windows Firewall
  • Press OK.
Note: After the issue is resolved you must turn the Windows Firewall on again.
Step 2:
Temporarily Disable any installed third Party antivirus software.
Sometimes the antivirus / malware / adware / firewall program marks the Microsoft Windows Installer file as junk and prevents it from being installed. Please refer to your vendor's website to temporarily disable it. After the installation is complete, you can open it again. In most cases, Microsoft Windows Update Error ERROR_UNABLE_TO_CLEAN should be resolved by these operations. However, if the problem persists, follow the method below.
Recommended Method
  • With the help of SmartPCFixer, you can solve the error ERROR_UNABLE_TO_CLEAN by simple clicks.
  • Step 1: Download SmartPCFixer and Launch the software.
  • Step 2: Run the software and click Quick Scan.
  • Step 3: Click Fix All to fix all PC errors with one click.
  • Step 4: Congratulations, error removed completely!
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