One of our users receives a contact attached as an Outlook item. The contact opens but displays a (Read-Only) status at the top of the contact window. (Does not open as Read-Only on other computers) When the 'Save & Close' button is pressed, an error message reading "you don't have appropriate permission to perform this operation" appears and the contact is not added to the user's list of contacts.
When Outlook is launched as administrator, the contact still displays 'Read-Only' but the user is able to save the contact without being presented with the permissions error.
What I've tried:
1. Creating a new Outlook profile
2. Completely uninstalling and reinstalling Office (Using the Easy Fix tool)
3. Checking user permissions for the ost file (we are using click-to-run Outlook 2016 in cached Exchange mode on O365)
4. Saving to desktop - it made it appear like it worked as it closes after you hit save, but it doesn't add the contact.
Thanks in advance for your assistance!