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Steps to fix McAfee VirusScan Program Error 1603:

Posted: Thu Jun 17, 2021 8:45 am
by samparker99
1: Check Windows registry related to Error 1603 and repair them if required.

2: Perform a Full Malware Scan of Your computer.

3: Using the Disk Cleanup (cleanmgr), clean out all of your system junk (Temporary Files and Folders).

4: Update Device Drivers on your PC.

5: Undo” Recent System Changes using Windows System Restore.

6: Uninstall the McAfee VirusScan Program related to Error 1603 and reinstall McAfee VirusScan Program again.

7: Run Windows System File Checker (“sfc /scannow”).

8: Install all available Windows Updates.

9: If above steps doesn’t work, time to perform a Clean Installation of Windows.

Since all the above steps require technical expertise to be performed in the right way so if you’ve got doubt that you simply cannot perform them correctly, then visit mcafee.com.