Users may be unable to open .txt, .pdf. and .msg files through shortcuts in OneDrive for Business

Title: Users may be unable to open .txt, .pdf. and .msg files through shortcuts in OneDrive for Business
User impact: Users may have been unable to open .txt, .pdf. and .msg files through shortcuts in OneDrive for Business.
More info: Affected users may have encountered unexpected UI behavior when attempting to open .txt, .pdf. and .msg files through shortcuts in OneDrive for Business, seeing them displayed as empty folders rather than showing the expected content.
Users should have been able to access the affected files directly through non-shortcut access methods as expected.
Final status: The fix deployment has completed, and we’ve confirmed that impact was remediated.
Scope of impact: Users serviced by the affected infrastructure attempting to open .txt, .pdf. and .msg files through shortcuts in OneDrive for Business.
Start time: Monday, October 2, 2023, at 10:53 AM UTC
End time: Saturday, October 28, 2023, at 12:26 AM UTC
Root cause: A recent service change caused the service to treat PDF files as folders instead, which resulted in impact.
Next steps:
– We’re further reviewing the context surrounding the offending service change so we can understand why PDF files were treated as folders erroneously and help prevent similar impact in the future.
This is the final update for the event.