10/09/2026
The Defense Enrollment Eligibility Reporting System, or DEERS, will be temporarily unavailable this weekend. The planned outage is scheduled to begin at 9 p.m. Eastern Standard Time on Friday, Oct. 9, and end Sunday, Oct. 11.
The Defense Manpower Data Center is updating DEERS, and it will be moving to a new cloud environment.
DEERS is a database of information about military personnel, Defense Department and military service civilians and their family members. To get Tricare coverage, beneficiaries must be registered in DEERS.
Beneficiaries who need to make changes, or who need to check their information in DEERS, should do so before the weekend by visiting milconnect before 9 p.m. Friday.
This yearβs Tricare Open Season begins Nov. 9 and ends Dec. 8. During that time, beneficiaries can enroll in or change their health plan for the next year. Changes made during open season will take effect Jan. 1, 2027.