Hi,
Usually such issues arises due to mismanagement of PST files present in Outlook.
Or there are unnecessary add-ins which is interrupting your functioning of Outlook.
So to fix it you can follow below mentioned approach.
Nice Way: ****://***.dbx2pstconverter.com/blog/outlook-error-code-0x800ccc0e-how-to-fix-this-error-message/