DA3001 - A connectivity error has occurred and your device can't connect to the server. This may be due to one or more of the following reasons. Contact your system administrator.
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The server URL typed may have some issues, check for typo errors or if it matches the HTTP protocol of the server.
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Server can't be reached because it is offline;
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The Application pool has stopped. Restart the pool and try again;
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The Server host name can't be resolved because the DNS can't be reached;
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Server is actively refusing the connection because the port you are using is not allowed through the firewall;
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The local system doesn't have network connectivity;
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The local system firewall is blocking outgoing connections. Add a firewall exception for the application.
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Server is not from the same origin of local system so the request is blocked by Cross-Origin Resource Sharing (CORS).