To email out of Dynamics NAV 2017, the Office dll is located in the folder: c:\Windows\assembly\GAC_MSIL\office\126.96.36.199__71e9bce111e9429c. The Office dll is the only file in the folder.
In the last few days, for some, but not all users, the entire 188.8.131.52__71e9bce111e9429c folder is being deleted along with the Office dll, of course. Users are unable to email out of Outlook until someone manually recreates the 184.108.40.206__71e9bce111e9429c folder and copies the Office dll into it. Within the last week, this has happened twice to some of our users and once for others, while most remain unaffected.
Does anyone have any ideas about what could be causing this odd behavior?