It's a good idea to keep Windows 10 and Outlook both up to date. This ensures that you have access to the most up-to-date features and bug fixes. They should update themselves automatically, but you may double-check manually.
- To launch Settings in Windows 10, press Windows key + I and select Update & Security > Check for updates.
- Open Outlook and navigate to File > Office Account > Update Options > Update Now from the File menu.
Make use of the Recovery and Support Assistant.
Microsoft is well aware of the problems that Outlook and the Office suite as a whole may cause. To address these difficulties, Microsoft created a program that may be able to automatically correct any errors.
The Outlook Support Center offers the Support and Recovery Assistant., and can help out when Outlook stops responding when the client can't receive emails when shared calendars and mailboxes stop working when the program keeps asking for your password, and when the program claims to be 'trying to connect' or complains about being 'disconnected'.
Download the Assistant and follow the wizard through. It will try to automatically detect and repair any problems.