The net loss was $3.1m in the six months ended March 31, from a profit of $1.96m a year earlier.
Company says its weak share price leaves it vulnerable to a takeover.
Legal action involves $837,373 withheld by Exceed over unresolved sale details.
Director Ron Halls will be acting CEO until a new appointment is made.
The sale means Renaissance's revenue will more than halve to $80 million from $180 million. Net interest-bearing debt is wiped out.
Computer reseller and trainer Renaissance Corp returns to profitability in the six months to March 31.
Sign up for NBR subscriber content or email alerts
The easiest way for subscribers to stay logged in is to click the "Remember Me" option on the Member Log In box on the top right of this page.