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When multiple previously working Live segments fail simultaneously, the causes are almost always:
Microsoft explicitly notes that complex or previously-valid audience logic can fail to publish after internal updates, even without user changes.
Once a segment enters this “phantom Error” state, there is no UI-based recovery:
❌ Re-running validation ❌ Saving as copy ❌ Editing filters ❌ Removing/re-adding conditions
All fail because the internal segment artifact is already invalid.
This aligns with reports in the Dynamics Community where resolution required Microsoft backend intervention
Open a Severity B or higher support ticket and reference:
Support can:
This is the only way to restore the same segment IDs.
If time-sensitive:
Create entirely new segments
Avoid:
Publish one segment first
This bypasses the corrupted internal definition.
Under review
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