AGAIN – Error 0x8DE20003 – Microsoft, answer this!

Right, this is getting silly.

I am STILL getting error message 0x8DE20003 on two of my Outlook.com accounts in Windows Live Mail on Windows 10.

I have asked this question recently but not been given a fix.

Can somebody please tell me how to fix this problem - preferably from Microsoft.

I am running Norton Security and have tried disabling this - to no avail. I have uninstalled and reinstalled the program - to no avail.

I have downloaded the Windows Live Mail Diagnostic and run it - it said errors had been fixed - they haven't.

I have tried going to Uninstall Programs and repair Windows Live Essentials - it said it had fixed the problem. It hasn't.

This is now a joke. Can I please have a fix for this problem.