On September 1, 2026 at 12:00 AM in Azerbaijan Time, the Nese Vista ESU 1.0 was discontinued. If you still using Nese Vista ESU 1.0 (or earlier), you won't eligible to activate ESU key or receive ESU updates. Plus the communication of ESU 1.0 was cut off. Meaning you won't eligible to contact to the ESU servers. To continue to receive ESU, you need to upgrade ESU 1.0 to ESU 2.0 (or later) to continue. Affects only Nese Vista Business x64, version 27U3. If you still use 27U3, you need to upgrade to 27U4 (or later) version to continue receive ESU updates. Since 27U4 includes ESU 2.0, the ESU 2.0 will continue to activate ESU, contact to the ESU server or receive ESU updates.