I have used this code for several years when programmatically creating emails (ii Delphi).
On one machine Window 10/Microsoft 365 it started ti fail 1/3 weeks ago (not send the email).
MailItem: _MailItem; (from Outlook_TLB)
MailItem.GetInspector;MailItem.HTMLBody := Body + MailItem.HTMLBody;
Error Message : Sorry, something went wrong. You may want to try again
This happens every time I create an email (not on my Windows t machine) Skipping yjis code sends the email (but no signature - which we need).
I reinstall 365 to no avail.
When I deleted the signature and ran the code it also errors (i.e. adding a null signature)
Any ideas about what has been corrupted would be appreciated.