How to fix ‘McAfee Won’t Open’ error on Windows 10?

McAfee is one of the leading brands that have been designing its antivirus or security solutions in order to offer a wide range of protection against online threats like virus attacks, malware threats and many more such attacks. As these threats might cause harm to the users’ device in several ways like hacking their details and use them in negative manner. we will cover ‘McAfee won’t open’ error on Windows 10.

Some of the popular and trending McAfee Activate product designed by the company includes McAfee Total Protection, McAfee Mobile Security for iOS & Android, McAfee Family Safe, McAfee Web Advisor, McAfee Live Safe, and many more. All these McAfee software are easily available onto its official website i.e. To get just follow the three procedures i.e. download, install, and Activate.

Sometimes the users face some issues while executing their McAfee Activate subscription onto their Windows 10 device i.e. a pop-up message is displayed over the screen showing the message as shown below:

“McAfee won’t open an issue on this system”

Thus, the steps to resolve this error has been mentioned in the article given below. So, follow these steps to get rid of this error, easily.

Steps to fix ‘McAfee won’t open’ error on Windows 10:

Before jumping onto the steps to resolve this error, the users should be aware regarding the causes responsible for the occurrence of such error on their Windows 10. Thus, by resolving those cases, the users could easily get rid of this error. The causes are as foll0ows:

                    1.Corrupted setup files of McAfee setup

                     2.The device being infected through Virus

                     3.McAfee Subscription is not updated

                    4.Presence of third party security solution

                     5. Firewall being enabled onto the Windows 10

                      6. Operating System being outdated

By following the steps listed below, the user could easily resolve the ‘McAfee won’t open’ issue on their Windows 10 device. The steps are as follows:

       1.Update the McAfee Activate Subscription:

a. First of all, execute the ‘McAfee’ activate the product, followed by clicking the ‘PC Security’ option.

b.Here, move onto the ‘Update McAfee Application’ the panel, followed by clicking the ‘Check for Updates’ button.

c.After this, if any of the updates is available then, click the ‘Update’ button.

d.Now, wait till the process gets completed.

e.Once the process gets completed then, restart the device.

       2.Uninstall the entire Third-party security solution

       3.Disable the Windows 10 Firewall:

a. First and foremost, execute the ‘Control Panel’ the window onto the device.

b.Here, select the ‘Windows Firewall’ option, followed by toggle off the ‘Windows Defender Firewall’ option.

c.After this, do the same for its parts i.e. Private Networks Settings and Public Network Settings.

d.At last, click the ‘OK’ button to save the entire changes made, followed by rebooting the Windows 10 device.

       4.Close the McAfee software running in the background:

a. Firstly, press the three keys altogether i.e. Ctrl, Shift, and Esc key in order to execute the task manager onto the device.

b.Here, move onto the ‘Process’ panel, followed by selecting the McAfee Activate application.

c.And then, click the ‘End task’ option to close this if executing in the background.

d.At last, restart the Windows 10 device.

       5.Update the Operating System:

a. Execute the ‘Settings’ application, followed by selecting the ‘Update & Security’ option.

b.And then, move to the ‘Update’ panel, followed by tapping the ‘Check for Updates’ option.

c.Here, if any of the updates is available for Windows 10 then, tap the ‘Update’ button.

d.Once the update of the Windows 10 gets completed, the device will get updated automatically. Thus, try to execute the McAfee application or product.


I hope, this article is quite successful in resolving the error of McAfee won’t open on the Windows 10 device. The steps detailed in this article are quite easy as well as simple to follow. Thus, if any of the methods are creating any doubts then, the users are advised to access the official website of McAfee i.e. to get assisted by its technicians.



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