C:\Windows\System32\AppLocker\MDM\XXXXXXXXXXXX\AppLocker\ApplicationLaunchRestrictions\apps\EXE\Policy

Recently I made changes to a Exe RuleCollection in Intune ( Via XML ) and it wasn’t updating on the end user device.

I checked the XML and found out I had not put the close bracket ( </FilePublisherRule> ) for the rule

Fixing up the XML fixed this!

You can also use an XML Validator

Validate XML files (xmlvalidation.com)