PROBLEMA
When using a self-signed certificate, users are unable to log in to an ArcGIS Enterprise portal with ArcGIS Collector.
Starting with ArcGIS Collector version 17.0.3, self-signed and untrusted certificates are no longer supported. This change was made due to security concerns. Thus, customers that use self-signed and untrusted certificates for testing must update their certificates.
Without additional cost, there are a few ways to resolve this issue.
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