Hello,
Is there Azure AD conditional access policy, which may block the access to this website?
In addition, since this is a forum mainly covering questions about Microsoft Advanced Threat Analytics, I would recommend to submit a new question on the following forum for getting better support.
https://techcommunity.microsoft.com/t5/Windows-Defender-Advanced-Threat/ct-p/WindowsDefenderAdvanced
Best regards,
Andy Liu
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