https://community.cisco.com/t5/devnet-sandbox/reservable-catalyst-center-down/m-p/5549441#M12391 <P class="">After reserving the Sandbox, I am unable to access the Catalyst Center; page times out and I get a message stating that the site cannot be reached. I see the banner at the top: "Cisco Catalyst Center Reservable Sandbox is offline for maintenance and upgrade." Do we know when it will be back online? ISE and CML appear to be working fine.</P> Thu, 30 Apr 2026 14:07:46 GMT anshshar@cisco.com 2026-04-30T14:07:46Z https://community.cisco.com/t5/devnet-sandbox/reservable-catalyst-center-down/m-p/5549441#M12391 <P class="">After reserving the Sandbox, I am unable to access the Catalyst Center; page times out and I get a message stating that the site cannot be reached. I see the banner at the top: "Cisco Catalyst Center Reservable Sandbox is offline for maintenance and upgrade." Do we know when it will be back online? ISE and CML appear to be working fine.</P> Thu, 30 Apr 2026 14:07:46 GMT https://community.cisco.com/t5/devnet-sandbox/reservable-catalyst-center-down/m-p/5549441#M12391 anshshar@cisco.com 2026-04-30T14:07:46Z