Many states (like Michigan, Colorado, and Illinois) have updated their security protocols for 2026. Thus, State Status may show "Not Found" (because the return is sitting in a secure holding queue waiting for identity verification or fraud filters).
The state website usually won't update until they actually begin the manual or automated "check-through" phase, which can take 30+ days during peak volume.
Most states will mail you a physical letter if they need you to verify your identity before they will "receive" the return into their system.
For more information: Colorado Department of Revenue Refund
For more information: Colorado Department of Revenue: Contact Us
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