Restore Opened Windows from Last Outlook Session
If Outlook closes unexpectedly, like during a system update or reboot, the windows you had open in your last session may not reopen by default. To restore your previously open windows, open a command prompt window and run the command below (note the space between .EXE and /):
“C:\Program Files\Microsoft Office\root\Office16\OUTLOOK.EXE” /restore
You can create a desktop shortcut for this command to quickly restore your windows anytime:
Navigate to the OUTLOOK.EXE file.
From Windows (C:), click Program Files (x86).
Click Microsoft Office.
Click Office15.
Locate the OUTLOOK.EXE file.
Right-click OUTLOOK.EXE.
From the drop-down menu, select Create shortcut.
Right-click on the OUTLOOK.EXE shortcut you just created.
Select Properties.
In the Target field, add a space plus /restore to the end of the text. It should look like the following: C:\Program Files (x86)\Microsoft Office\root\Office15\OUTLOOK.EXE /restore
The next time Outlook closes unexpectedly, use this shortcut to restore your last session.