Wayland Bruns
New Member
- Outlook version
- Outlook 2016 64 bit
- Email Account
- IMAP
We create Outlook to Android/IPhone sync products and have about 80k active Outlook users. So we hear about auto-update problems pretty quick.
In the past week we have had an unusual number of customers reporting the error: "Either there is no default mail client or the current mail client cannot fulfill the messaging request."
We have pinned this down to the following:
Open questions:
Note: "No default email client" has been a common MAPI issue for nearly 20 years. The normal fix is the following:
In the past week we have had an unusual number of customers reporting the error: "Either there is no default mail client or the current mail client cannot fulfill the messaging request."
We have pinned this down to the following:
- Microsoft 365 Outlook 16.0.13127.20402 and 16.0.13127.20408
- 64-bit only - does not affect 32-bit outlook
- Error triggers on MAPI 64 login by an add-on app (we are add-on developers)
- Normal fix - set default email client does not work
- Normal repair - does not work
- Online repair - works
- Adding the file: vcruntime140_1.dll to C:\windows\system32 works
Open questions:
- What the heck is 20402? That just happens to be the one we fixed today.
- Is this fixed in the current release 20508
Note: "No default email client" has been a common MAPI issue for nearly 20 years. The normal fix is the following:
- Windows->Start->Default Apps
- fIrst option "Email" - Set this value