Greetings!!

“Unable to start Microsoft Outlook. cannot open the outlook window. the set of folders cannot be opened." error

Can be fixed by the following steps

1.     Close all opened office applications.

2.     Repair Microsoft office

3.     Restart the PC

4.     On the Start menu, click All Programs > Accessories > Run

5.     Type the outlook.exe /resetnavpane command and click OK.