This Error Message Article explains the TEKLYNX CENTRAL error message “Error No connection could be made because the target machine actively refused it 127.0.0.1:8000” and details how to fix the underlying problem that caused it to appear.
TEKLYNX CENTRAL (LABELNET) is unable to connect to another software component in TEKLYNX CENTRAL. In the situation that prompted this article the reason it could not connect was that the LABELNET Host Common service was not running.
Check to make sure LABELNET Host Common service is running.
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Issue Found: Windows 2012, running TEKLYNX CENTRAL v4.0