MFA-Duo - NSURLErrorDomain -999

This document describes the troubleshooting procedure when experiencing the NSURLErrorDomain -999 message in the Duo Mobile App.

The NSURLErrorDomain -999 (and sometimes -1003, -1004, or -1200) message happens semi-frequently during Duo pushes. The error has only been reported on iOS devices. The error happens when there is a network error within the app during a push. A troubleshooting step to resolve the issue is to toggle wifi and use cellular data, or to switch to a different wifi network if available.

Duo's Documentation:

Keywordsmulti factor authentication push mobile device wifi network data 999 1003 1004 1200   Doc ID117266
OwnerKyle A.GroupIdentity and Access Management
Created2022-03-10 11:25:28Updated2023-12-13 14:51:02
SitesDoIT Help Desk, Identity and Access Management
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