I enabled message protection in our Office 365 tenant based on Tony Redmond's article here -https://www.petri.com/protect-email-office-365 but the protect button continues to be grayed out in Outlook Web. The protection works fine in the Outlook client. I also enabled protection in another tenant without issue. What would cause the protect button to be grayed out in Outlook Web?
I have tried disabling the button and re-enabling and that didn't help (Set-IRMConfiguration -SimplifiedClientAccessEnabled $false/Set-IRMConfiguration -SimplifiedClientAccessEnabled $true).
I have also tried Outlook web in IE and Chrome, it is grayed out in both.
Other users also see the protect button grayed out.