Self-Managed

General

• Messages Incorrectly Sent to Previous Channel During Rapid Channel Switching
• Single video attachments not visible when image previews are collapsed (v11.10.0)
• LDAP/SAML Nickname Attribute Exceeding 64 Characters Causes "Invalid Nickname" Login Error
• Server Fails to Start After Upgrade Due to Read Replica Lag During App Migrations
• Restricting Team Email Invitations to Team Administrators Only
• Permanent Channel Deletion via API Returns 403 for Archived Channels
• See all 40 articles

CLI & MMCTL

• Plugin fails to activate with "An account with that email already exists" for its bot account
• mmctl Fails With a Credentials Error, and Deactivated AD/LDAP Users Keep Reactivating
• Troubleshooting: Migrating a User from GitLab OAuth to SAML in Mattermost
• Troubleshooting Guide: Delays in Managing Personal Access Tokens in Mattermost
• Delete old archived channels
• Locked Out of System Administrator Account

Licensing

• Eligibility for Mattermost Staging/Testing Licenses
• How to Resolve the "Invalid Signature" Error in Mattermost when requesting a Trial License
• Updating a Mattermost Enterprise License

Infrastructure and Monitoring

• Data Retention Job Fails with Permission Denied on File Deletion
• Enabling Korean (CJK) Search with OpenSearch/Elasticsearch in Multi-Pod Deployments
• Shared Channel Invites Fail on Non-Leader Nodes in a High Availability Cluster
• Playbooks "Add Channel to Sidebar Category" Action Fails After MySQL to PostgreSQL Migration
• Configure Read/Write Splitting for Mattermost with a Patroni-Managed PostgreSQL Cluster
• Why Using DataSourceReplicas Is Recommended: Node-Role vs SQL-Aware Proxies
• See all 38 articles

SAML Integration

• SAML SSO with Entra ID: Resolving Signature Verification Errors
• Solving "Duplicate Username" SAML Login Warning in Mattermost

AD and LDAP Integration

• Hiding the "Switch to Email and Password" Sign-In Option for AD/LDAP-Only Deployments
• AD/LDAP Group Sync Does Not Promote Members to Team Admin
• LDAP User Remains Deactivated After Returning - AuthData Mismatch on IdAttribute Change
• Understanding LDAP `objectGUID` Encoding in Mattermost
• LDAP Configuration Troubleshooting in Mattermost (Bind & Sync)
• Resolving “An account with that email already exists” During SAML Login in LDAP-Integrated Deployments
• See all 10 articles

Plugins

• Plugin Configurations Wiped in HA Environments When Plugin Subsystem Is Disabled and Re-enabled
• Jira Plugin Sends Duplicate Assignment Notifications in High Availability Environments
• Google Drive Plugin Notifications Not Arriving After Enabling Create/Upload Features
• AI Services List Is Empty After Upgrading from Mattermost Agents v1 to v2
• Mattermost Agents v2: OpenAI compatible AI Service Fails with "No Valid Keys" Error Due to Missing API Key
• GitLab Plugin v1.12 Upgrade Leaves Existing Instances Without Migrated OAuth Configuration
• See all 13 articles