'Inactive Application Add-ins' and obviously is the basis for the Room Finder to work. We now could track it down to the Microsoft Exchange Add-In ( UmOutlookAddin.dll ), which was listed under Meanwhile there are still clients running Windows 7 and Office 2010 where the Room Finder is still working. The Room Finder again suddenly stopped working / appearing in Outlook. At first it seemed working on most clients (on some it still didn't in the first place), but after days or weeks, which was varying from client to client, Switched all clients to Office x86 (currently on. On that we noticed that the Room Finder wasn't working on a single client and Now since about a year we were moving more and more clients to Windows 10 圆4 (most run buildversion 1709, some still 1607) and installed Office Professional Plus 2016 圆4 first.
Also we noticed that, when upgrading to Outlook 2016 x86 (part of Office Professional Plus 2016) from 2010 pre-installed (no matter if on Windows 10 or 7) the Room Finder still was In this configuration the Room Finder was/is working fine.
Windows 7 圆4 (6.1/7601) and Outlook 2010 x86 (as part of Office Professional Plus 2010) on our clients. About 1.5 years ago we exclusively were running I'm an ITI administrator in a medium sized company (about ~500 clients) and we're facing a problem that we seem not to be able to solve.
