@Dean Hoile
Thank you for your post!
Adding onto what @Dillon Silzer mentioned, since you didn't see your Dynamic Security Group update after configuring the membership rules. You can definitely leverage the Validate a dynamic group membership rule (preview) feature to validate your dynamic rule, and confirm the rule is working as expected.
Please keep in mind that depending on the size of your Azure AD organization, the group may take up to 24 hours for populating for the first time or after a rule change. For more info - Troubleshooting dynamic memberships for groups.
(user.country -eq "Gibraltar") and (user.country -eq "Hungary") and (user.country -eq "Isle of Man") and (user.country -eq "Malta") and (user.accountEnabled -eq false)
I hope this helps!
If you have any other questions, please let me know.
Thank you for your time and patience throughout this issue.
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