---
title: "Can't Access Duo on My iPhone or Mac"
canonical: "https://tech.calpoly.edu/space/CPKB/893091876/Can't%20Access%20Duo%20on%20My%20iPhone%20or%20Mac"
format: markdown
---
### Problem

"I'm using an iPhone or Mac, and Duo isn't loading properly. The Duo window is blank/white/gray."

"MFA locked me out of the Cal Poly portal."

### Solution

*We’ll let the experts explain this one.*  
  
Visit Duo's [How do I resolve Duo Prompt display issues related to iOS or macOS content restrictions?](https://help.duo.com/s/article/3710?language=en_US) page for more information. Under **Resolution**, follow the **Disabling content restrictions** instructions.

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