After i installed the McAffe on my Win 8 Tablet, I can not fix "Real Time Scan " alert even I press "Turn on" command button. A second the alert is green but immediately the status is red again. And i am invited to turn it on again.
Same here this morning I have McAfee on two PCs both have issues with real time scanning and running a scan.
It has been installed on both PCs for some time
Having the wrong time can mess McAfee up so ensure the time setting and date is correct then....
If no help
Best for both of you to call support for your country. Try running MVT and see if it detects any issues Not sure re the tablet if it will work but the PCs should work
Make sure you have no other AV scanners installed they can clash. If you had 1 installed run its own removal tools as removing via windows control panel does not remove everything.