MS Excel 365 sometimes won't start

Using windows 10 64 bit version 1709 on a desktop PC.
About once a week or so, Excel has trouble opening and crashes up to 8 times before finally recovering and opening. There are no error messages or BSODs, just slow to open, and a trail of failures in the Reliability Monitor. Office 365 is up to date, as is Windows.
It displays this problem opening varying databases, so it not a bad database, and it has to load Excel before loading a database anyway.

Any clues?

Caledon Ken said:

Hi skcusime.

So what do the "View technical details" reveal besides these errors you posted.

Have you scanned your disk for errors?

Ken

Ken, Technical Details are shown here, but doesn't help me at all. I've scanned the drives and run SFC all with no errors. The machine runs perfectly except for this nuisance. And I know if I didn't look for problems by running the reliability monitor, I'd never know about this but something's got to be causing it.....

Caledon Ken said:

To see if this is an addin issue you could start excel in safe mode.

Good thought Ken, but there are no active add-ins. I've opened several databases since my first email this morning without incident, but got another 8 errors a short while ago. That's 16 today!!

No add-ins are present.
I've restored back to an image I has before these issues (only been happening for 10 days or so) so we'll see what happens. Might have been a windows update (or office update) that caused it.
Here's hoping...

Caledon Ken said:

Good luck. Please post back how it goes.

Ken

Well unfortunately that didn't work. First time this morning after a bootup, loaded Excel directly from the start menu (not from a database shortcut) it failed 8 times. The spinning cursor spins for about 5 seconds as it loads (same as it does opening any program) and then goes off briefly, comes back for 2 seconds, goes off again, and does this about 8 times before finally loading the program.
As I said before, that's the only symptom of a problem - no crash messages or BSODs, just a bit slow opening, and a trail in reliability history. It usually opens just fine for the next 10 or 20 runs, sometimes goes for a couple of days!
I'll keep trying things and report back if anything changes.