Using classic Outlook for Windows in business environments
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And when I close out of outlook, it won't open unless I restart the computer. I don't understand.
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That is this: Microsoft is investigating an issue where Outlook doesn't close properly when you have an IMAP account in your profile and this can cause Outlook to have sync issues. There is a registry key to use as a workaround. If you don't want to edit the registry, I have a ready-to-use registry file available - download it, double click to run and ok the dialogs.
https://www.slipstick.com/doit/AllowLOGOUT.reg
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Outlook\IMAP
DWORD: AllowLOGOUTWithoutOK
Value: 1