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Event ID: 4029 Source: TlntSvr

Error in reading console screen buffer output or its information. System error: The parameter is incorrect.
For a generic description of the "parameter is incorrect" message, see Error code 87.
From a support forum:
Please try to turn on  password authentication on your telnet server.
Does the client is Linux server? Could you test this user on windows client?
Please check the telnet user account if need to change the password before first logging or account has expired.
See also T731891 and T732082.

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