Security Policy Errors

How to Fix Blank Text View in Defender Attack Simulation Landing Pages

Chanuka Geekiyanage Sep 25, 2026 868 views

Question details

Users are unable to edit English or Dutch content using the visual text editor in Defender Attack Simulation Training.

How to Fix Blank Text View in Defender Attack Simulation Landing Pages

Product: Microsoft Defender for Office 365
Device & OS: not provided
Scenario: Customizing phishing simulation landing pages within the Microsoft 365 Defender portal.
Observed behavior: The landing pages display correctly in preview and Code view, but the Text view remains completely blank when editing, and standard browser or role troubleshooting does not resolve it.

Before you start

Verify that your Microsoft 365 account has the necessary Global Administrator or Security Administrator roles assigned, and confirm you have saved any existing raw HTML edits in a separate document before proceeding.

Solution 1Recommended

Use Code View Workaround and Escalate to Microsoft Support

Since standard troubleshooting does not fix this specific Defender portal bug, you must rely on the Code view to make immediate edits and submit a detailed report to Microsoft's specialized support communities.

This blank text view error is a recognized platform issue within Microsoft Defender for Office 365 that primarily impacts the visual editor for specific language localizations (like English and Dutch).

Switch to Code view for immediate edits

In the Attack Simulation Training landing page editor, click the 'Code view' toggle to bypass the broken visual editor and modify your page's raw HTML directly.

Document your tenant and environment details

Record your exact Microsoft 365 tenant environment details, the specific user roles assigned to the affected account, and the browsers you have already tested (e.g., Edge, Chrome).

Post the issue to the Microsoft Defender Community

Navigate to the Microsoft Tech Community website, locate the 'Security and Compliance' discussions, and post your detailed reproduction steps under the Microsoft Defender category.

Submit a query on Microsoft 365 Q&A

Alternatively, visit the official Microsoft Learn Q&A platform and create a new support thread using the 'm365' tag to request specialized backend assistance from Microsoft engineers.

Use Code View Workaround and Escalate to Microsoft Support

Microsoft Intervention Required: Because the underlying cause is a rendering failure in the Microsoft 365 web portal, a permanent fix must be deployed by Microsoft's engineering team.

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Frequently Asked Questions

Why is the Text view blank in Microsoft Defender Attack Simulation Training?

This is a backend rendering issue within the Microsoft 365 Defender portal's rich text editor, which often occurs when processing specific localized content like English or Dutch text.

Can I still edit the phishing landing pages if the Text view is broken?

Yes. Because the Code view feature continues to function correctly, you can switch to the Code view tab and edit the underlying HTML of your landing page directly.

Will clearing my browser cache fix the blank page editor in Defender?

Generally, no. In this specific scenario, local browser troubleshooting and cache clearing do not resolve the issue, as the problem stems from the platform's editor rendering engine itself.

Microsoft Office Security Issues