Worked on stabilizing the M365 integration within the goauthentik/authentik repository, focusing on accurate identity mapping for on-premises users. Addressed a critical bug by updating the OnPremisesImmutableId creation logic to use the user’s email directly rather than a base64-encoded value, which reduced provisioning and authentication errors during cloud sync. This change aligned the implementation with existing documentation and improved the reliability of identity mapping, ultimately lowering support overhead and streamlining user provisioning workflows. Utilized PowerShell scripting and Markdown for both code and documentation updates, demonstrating a methodical approach to integration development and attention to detail in resolving edge-case failures.