Change Outlook’s browser handoff on the iPhone by opening Outlook → profile picture → Settings → Open Links With, then select Default Browser instead of the current option—or select Microsoft Edge if Default Browser currently produces the black screen. ^1^
The protection.outlook.com address is expected when Safe Links rewrites and checks an email link before redirecting to its destination; remaining on a black page is not the intended completion of that process. ^2^
If changing the browser does not work
- Update Outlook
- Open App Store.
- Search for Microsoft Outlook.
- Tap Update. If the button says Open, it is already current. ^3^
- Close Outlook and restart the iPhone
- Swipe up from the bottom and pause.
- Find Outlook and swipe its preview upward.
- Restart the iPhone, reopen Outlook, and test a link.
- Offload Outlook without deleting its documents and data
- Go to iPhone Settings → General → iPhone Storage → Outlook.
- Tap Offload App.
- Reinstall/reopen Outlook and test again. These are Microsoft’s documented iPhone repair steps for malfunctioning Outlook Mobile. ^4^
- Isolate the failing component
- Open the same message through Outlook on the web in Safari.
- Try once on Wi-Fi and once on cellular data.
- If the link works on the web or on another connection, the problem is localized to the Outlook app’s browser handoff or the original network rather than the destination website.
Avoid copying a Safe Links URL into unrelated messages as a permanent workaround; wrapped links are generated for Safe Links processing and may not be handled like the original destination URL.
If Open Links With is missing
For a work or school account, an administrator can manage or hide that setting. ^1^ Ask the Microsoft 365 administrator to check the Safe Links policy assigned to the account. Safe Links policies can rewrite URLs and perform another scan when the link is clicked in supported Outlook clients, including iOS. ^2^
For a personal Outlook.com, Microsoft 365 Personal, or Family account, do not use business Defender policy instructions; those apply to organizational accounts.
Escalation
If every Safe Links URL still shows a black page after changing the browser and repairing Outlook, submit the issue from the affected app so its diagnostics are included:
Outlook → profile picture → ? → Contact Outlook Mobile Support. Replies appear inside Outlook rather than by telephone or email. ^5^
Include:
- iPhone model and iOS version
- Outlook version
- Whether Safari and Edge behave differently
- Whether Outlook on the web opens the same link
- Whether the account is personal or work/school
- A screenshot of the black
protection.outlook.com page, with account details obscured
References
- Choosing how you want to open links in Outlook mobile apps | Microsoft Support
- Safe Links in Microsoft Defender for Office 365
- Optimize the Outlook mobile app for your iOS or Android device
- Troubleshoot Outlook mobile issues | Microsoft Support
- Get in-app help for Outlook for iOS and Android | Microsoft Support