[0x7FFC67E71780] ANOMALY: meaningless REX prefix used

[greigw]

Hi All,

I am running ccleaner from a batch file using the  '/auto' switch and getting '[0x7FFC67E71780] ANOMALY: meaningless REX prefix used'.

Can anyone shed any light on this?

Thanks

g

[hazelnut]

Any more info?

Which operating system?

Which antivirus?

Does that error message only happen when you run CCleaner or does it happen whenever you run a command prompt?

EDIT>> some obscure info here.

https://social.technet.microsoft.com/Forums/ie/en-US/efd83b6a-dc86-4854-b05f-f484e1ed5596/anomaly-meaningless-rex-prefix-used?forum=winserverGP

[greigw]

Windows 10

norton 365

I have come to the conclusion that this is a windows 10 cmd / 64bit application issue.

If I run it from a Powershell script then there is no such notification.  As far as I can tell ccleaner is still doing its thing when run from win10 cmd despite the 'Anomoly' notifications.

Thanks for the input nonetheless.

G