After click Login --> Simulate, then NT 8.1.17 was exit.
Here is the log:
2023-06-24 02:00:46:664|2|4|Session Break (Version 8.1.1.7) 2023-06-24 02:01:00:061|1|4|Global simulation mode disabled 2023-06-24 02:01:01:061|1|4|Automated trading disabled 2023-06-24 02:01:01:092|1|2|Using IS (is-us-nt-005.ninjatrader.com/31658) 2023-06-24 02:01:01:186|0|4|Unhandled exception: A task was canceled.
My OS is Windows 10.

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