Troubleshooting & Support
Mail Update Failed error
You must contact CSS Support to resolve this.
Updated Latest published version
You must contact CSS Support to resolve this.
Overview
If you encounter a Mail Update Failed error in the CSS Launcher, please contact Support with your CSS Launcher Log.
The most likely cause of this
The most likely cause of this error is a typo in your email address.
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Source: CSS Launcher User Manual, Rev. 5 — December 2025.