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Outlook Troubleshooting

Creation date: 3/18/2019 1:32 PM    Updated: 7/27/2026 8:47 AM   email slow email will not load outlook outlook slow outlook will not load
Argus IT Help Desk · Email
Outlook Slow or Won't Load
One quick test tells us whether an add-on is the problem.
If Outlook won't load, keeps shutting down, or runs slowly, try this before entering a ticket. It takes one minute and tells IT exactly where to look.
🛡️  Start Outlook in Safe Mode
1
Press the Windows key (bottom-left of the keyboard, with the Windows logo).
2
Type outlook.exe /safe and press Enter.
3
Select your user profile when Outlook asks.
4
Use Outlook normally for a while.
💡  Why this works
Outlook doesn't just load Outlook — it also loads a set of add-on programs (connectors for social media, Bing, Maps, and so on). Safe Mode starts Outlook without any of them. If Outlook runs noticeably better in Safe Mode, one of those add-ons is the culprit — and IT can hunt down which one.
🆘  Then submit your ticket
Tell us: did Outlook run better in Safe Mode — yes or no? Plus what it was doing before (slow, crashing, not loading), and when it started. The Safe Mode answer is the single most useful clue you can give us.
ArgusIT KB# 130001 · Tags: outlook · outlook slow · email slow · email will not load · outlook will not load