Cannot Start Microsoft Outlook
Cannot Start Microsoft Outlook is an error that usually occurs when trying to launch MS Outlook and it may occur in different versions. It indicates that the data file where all the Outlook information is stored cannot be opened. The error may be due to due to errors while opening the Outlook Data file, or due to navigation pane settings corruption, invalid Outlook Add-ins or because Outlook is running in compatibility mode.
You may see an error message, “Cannot start Microsoft Outlook. Cannot open the Outlook window. The set of folders cannot be opened. The operation failed.”
Solution 1. Reset Navigation Pane settings
“Cannot Start Microsoft Outlook” error may indicate that your Outlook navigation Pane settings might be corrupt. Try to reset it by running the outlook.exe /resetnavpane. To run this see steps below.
Solution 2. Disable Add-in
“Cannot Start Microsoft Outlook” error possible cause is the add-in in your Microsoft Outlook. Try to run your Microsoft Outlook in Safe mode. If the error disappears, disable all add-in. See instructions below on how to.