Planned DUO Proxy Maintenance launching 12/22/25

We are writing to inform you of a planned maintenance window to upgrade the DUO Proxy servers used by your organization. This upgrade is required to replace soon-to-be End-of-Life (EOL) software and ensure continued, secure DUO authentication service.

What is happening?

• DUO Proxy servers listed for your account will be upgraded to the latest supported version per DUO’s direction to continue functionality.

Planned schedule

• Daily maintenance window: between 7:00 PM and 11:00 PM (local time)
• Expected downtime for DUO login functionality: up to 2 hours during the maintenance window
• The DUO maintenance will be taking place though January

What to expect

• During the upgrade, DUO authentication (login prompts) may be unavailable for up to 2 hours. Please plan any critical logins or deployments outside the maintenance window to avoid interruption.
• We will monitor the upgrades closely and make every effort to minimize downtime.
• If we encounter issues that require additional time, we will notify you immediately with updated timelines and mitigation steps.
• For this maintenance, DUO Proxy will only need to be upgraded once in your organization.
  
• There may be new DUO functionality introduced with the updates; please continue to use the tool and notify us if anything needs attention.

Action required from you

• No immediate action is required. If you expect critical activity during the planned windows or have specific scheduling constraints, please contact your CSM directly.

We appreciate your cooperation as we perform this important upgrade to maintain a secure and supported DUO environment.