Cannot send authorisation emails after installing O365

We use a purchase order application that sends authorisations via email, it worked flawlessly until we upgraded from Office 2013 Pro to Office 365.

I hasten to add that sending emails via the Outlook 2016 client works fine.

I presume that O365 no longer uses the MAPI client to direct the mail to the exchange server?

I did find several posts about creating a Outlook64Bridge but that did not work.

Also tried the FIXMAPI.EXE tool.

Event Viewer Logs:

Faulting application name: ENTRPRSE.Exe, version:, time stamp: 0x2a425e19
Faulting module name: ntdll.dll, version: 6.3.9600.18895, time stamp: 0x5a4b127e
Exception code: 0xc0000005
Fault offset: 0x0001de33
Faulting process id: 0x604
Faulting application start time: 0x01d402f066224d66
Faulting application path: [MappedDrive]\ENTRPRSE.Exe
Faulting module path: C:\WINDOWS\SYSTEM32\ntdll.dll
Report Id: d3308bfc-6ee3-11e8-bf94-68f728641a32
Faulting package full name:
Faulting package-relative application ID:

Thank you in advance for any help.

Andrew WrightIT CoordinatorAsked:
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Jian An LimSolutions ArchitectCommented:
what is "purchase order application" ?

outlook 365 still use MAPI but being a click to run instead of full installation, it might change the application integration.
Usually, there is nothing you can do but go back to the application owner and ask for support.

if you code write it, then need to rewrite some module for it to work.

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Andrew WrightIT CoordinatorAuthor Commented:
Not the answer I was looking for but I tend to agree with you, I think it’s time for an upgrade or new application.

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