Error: Cannot open Outlook, set of folders cannot be opened - Microsoft Community

error message trying launch outlook. uninstalled reinstalled office. when trying launch outlook error message: 

"cannot start microsoft outlook, cannot open outlook window. set of folders cannot opened. unexpected error has occurred." what's fix?

presumably ok before?

https://support.office.com/en-us/article/i-can-t-start-microsoft-outlook-2016-2013-or-2010-or-receive-the-error-cannot-start-microsoft-office-outlook-cannot-open-the-outlook-window-d1f69da6-b333-4650-97bf-4d77bd7abb85

Office / Outlook / Windows 10 / Office 365 for business