Several issues could cause Outlook to open incorrectly or not at all. Some common culprits include: Problematic add-ins, Damaged files, A corrupted profile, and. Navigation pane issues.
If your Microsoft Outlook will not open, there could a few reasons why. Outlook has a tendency to leave multiple processes running in the background, most of which are invisible to a computer user. If one of these processes is already running, attempting to open Outlook again will not display anything.
How to fix “cannot start Microsoft Office Outlook”?
In this case you are likely to get this error : “Cannot start Microsoft Office Outlook. The file Outlook. pst is not a personal folders file.”. Let’s try to repair your outlook. Pst file using Scanpst. Exe, aka Inbox Repair tool. Open Windows Explorer and navigate to C:\Program Files\Microsoft Office\{Office version}.
Repair Outlook data files. If Outlook still doesn’t open, use the Inbox Repair tool to find and possibly fix the problem. Download and open the Inbox Repair Tool from Microsoft. Select Browse and navigate to your personal folders (.pst) file, then select Start.
Step 1 : If your Microsoft Outlook will not open, the first step is to open Windows Task Manager. There are a couple of options to do this, but the most efficient way to open Task Manager is to press the Ctrl, Alt & Delete buttons at the same time.
If Outlook opens as expected in Safe Mode, the issue is likely an add-in or toolbar extension. , and disable add-ins. One or more add-ins could be conflicting with Outlook and cause the problem. Disable all add-ins and see if this resolves the issue.
Why does outlook hang at loading profile or not start?
After updating to Current Channel Version 1905 (Build 11629.20196)and higher, Outlook may hang at loading profile or won’t start. You may notice that if you open Task Manager that other Office processes are unexpectedly listed even though you did not open the application. If you end those processes it may enable Outlook to then open normally.