I'm resposting from this thread to hopefully create more attention for this problem: https://answers.microsoft.com/en-us/outlook_com/forum/outlk_win-outtop_new-outsub_ofb/outlook-error-message-someh...
Hey. We're running into this issue on our AVD hosts (Win11 23H2). I've noticed that key mentioned in a couple other forum posts, can you confirm if that resolved it for you and what environment you're running - same as I? Any downsides to deleting that key? Thanks!
Both Windows 10 22h2 and Windows 11 24h2.
I have had no issues related to deleting that key.
I use both Intune and Group Policies to prevent it from showing back up because of a Windows update on my golden images.