By my understanding, Outlook integration should be available to all levels of v15 (PBX, Standard, Pro, Enterprise). When choosing an extension to modify, on the Integration tab, the "Enable integration" option does not respond to being clicked on, and when you try to choose an integration, the box is grayed-out (yes, I am from the US) and the cursor becomes a "do-not" circle. I tried the operation in M$ Edge, FF, & Chrome. I can enable/disable the Voicemail box on it's tab, but not on integration. V15 Standard 4/2/10 on Windows 10 VM. Thank you in advance for any solutions.