While using microsoft office outlook, the above error will frequently occur. You can run Outlook with the /resetnavpane argument. Please follow the below steps to fix this error. It’s very simple.
1. Press Windows key and R together to open the Run dialog.
2. In the Open field, type:
outlook.exe /resetnavpane
Note: there is a space between outlook.exe and /resetnavpane. There are no other spaces in what you have to type. You’d better copy it to the blank in case of any fault.
3. Click OK. Outlook should open.
After this, your outlook can work properly.