He lost the opportunity to say thank you and goodbye to the spectators since the technical problem lasted so long that he forced the channel to go directly to 7.30 .
Some viewers have taken on Twitter to vent their confusion and disappointment.
ABC Melbourne later tweeted an apology, saying that Henderson was amused by the problem and would have said goodbye on Friday night.
An ABC spokesman said that "an unexpected technical error" was the fault of switching to a -up transmission from the NSW.
"The timing of this error during Ian Henderson's scheduled final bulletin was unlucky, to say the least," he said in a statement.
"The good news is that Hendo will be back on the air at 1
The spokesman said the cause of the fault had been investigated and reiterated the station's previous excuses.
news director, Craig M murtrie, said that there was no way they would let Henderson go without a real goodbye and invited viewers to tune in again on Friday night for the "goodbye" that deserves so much ".
"I am embarrassed by what happened but Hendo is such a gentleman that the way he took him in his step is humiliating," he said.