After an upgrade to R81.20 Jumbo Hotfix Accumulator Take 96 and higher, users with special characters in the username cannot login to Gaia Portal

Product: Security Gateways, Security Management
Version: R81.20, R82, R82.10
OS: Gaia
Last Modified: 2026-04-17

Symptoms

• Login to the Gaia Portal fails with the error message "Invalid username".
• The same users can login over SSH as expected.
• Issue started after installing the R81.20 Jumbo Hotfix Accumulator Take 96 or higher.

Cause

The R81.20 Jumbo Hotfix Accumulator Take 96 or higher contain the hardening change in the Gaia OS to prevent security issues (PMTR-103606).

Gaia Portal supports only these characters in the username (for local and for non-local users (RADIUS / TACACS)):

• Letters (a-z, A-Z)
• Digits (0-9)
• Dash (-)
• Underscore (_)

Solution

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NOTE

This solution has been verified for the specific scenario, described by the combination of Product, Version and Symptoms. It may not work in other scenarios.

Article Properties

Access Level: Advanced
Status: Approved by TAC
Date Created: 2025-03-04
Last Modified: 2026-04-17