McAfee Antivirus

McAfee Error 1603

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While downloading the McAfee antivirus, you may confront Error 1603. This error usually arises during the installation and update procedure. Whenever the system fails to finish the installation procedure or update process, it shows McAfee Error 1603 on the screen.

Reasons of McAfee Virus Scan Error 1603

  • Partial installation of McAfee because of corrupt files Changes or corruption in windows registry entries
  • The system might be affected by virus infections or Trojan attacks
  • Some other software might have deleted McAfee connected files
You may also read:  McAfee Error Code 10053

 Symptoms of McAfee Installation Error 1603

  • Your system shows Error 1603 and crashes active program window
  • Show Installation success or error status.
  • ‘Freezes’ of your computer periodically for some time.
  • Frequently crashing of your system with McAfee error 1603 while running the similar program.

Steps To troubleshoot McAfee Error 1603 

Escalation tool

McAfee error code 1603 could be because of broken MSI entries. Manually clean up those MSI entry or use a tool to clean up these entries. Escalation tool is an automatic tool to clean up your broken MSI registration entries. If your error is connected with registry entries, you can fix the registry entries manually or using utilities like a registry cleaner. It is suggested to perform this change under professional’s supervision or guidance. A small blunder in this may cause the entire system failure.

Cleaning junk and temporary files

Clean up system junk and temporary files by inbuilt tool Disk Cleanup ( cleanmgr). For this, open the commands prompt and enter cleanmgr, and click enter. This will automatically begin cleaning of junk files.

Scan your machine for viruses & malware

Scan your complete system to check for any virus or malware available. This will clean out entire corrupt files and folders on the system.

Update Drivers

Update your system drivers to the latest drivers. You can use any device driver update tool such as Driverdoc for this update.

Install and reinstall McAfee antivirus

Uninstall the latest version of McAfee anti-virus on the system and try to reinstall it again with fresh installable files. This may also resolve your Error 1603.

Windows system restore

This is inbuilt utility in Windows. You can restore your system to earlier previous working version. This will assist you to restore your system back.

Clean installation of the windows

The final step is you require to format your system. This is a very time-taking step but the last option to resolve the error 1603. Execute a clean installation of Windows with bootable CD or DVD. This will eradicate your entire data, thus you have to very careful.

Hopefully, you would have resolved McAfee Virus Scan Error 1603 of your own. In case of any trouble, chat our experts for quick assistance. The professionals available here will guide you the best method so as to get rid of it easily.


Q) How to get rid of McAfee warning?

A) Choose the McAfee WebAdvisor add-on below Toolbars and Extensions and click the “Disable” button at the bottom of the window. You can also go to Control Panel > Uninstall a Program and uninstall the “McAfee WebAdvisor” software which appears here to fully remove it from Internet Explorer.

Q) Is McAfee Real time scanning must?

A) Realtime scanning checks files for malwares/viruses each time you or your PC accesses them. Keep realtime scanning activated to ensure the security of your computer. You can use Access Protection to protect your most necessary McAfee files, registries and services in case you mistakenly delete them.

Q) How to turn off McAfee Antivirus on Windows 10?

A) Initiallyopen your McAfee software. Tap PC Security, or tap the gear icon at the top-right corner. Hit Firewall. Click Turn Off.

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