I have sent two replies to incoming emails and so far things work. I then closed Outlook and re-opened it and it continued to work, so with luck normal service between me and friends can be resumed without the stress of the last few days.
although your solution works, most of the time, I am having to run the programme almost every time I try to use Outlook. Is there something more permanent?
How do I do that? Sorry to be so feeble.