Banks took to Twitter to inform the fans, reported Aceshowbiz.
"I just got an email from @kmichelle team and she is unfortunately unavailable this fall so she is cancelling our tour," tweeted Banks.
In follow-up tweets, the singer said she would reveal new dates soon, probably for her solo tour.
"My team will work on an alternative plan to try and keep some of the dates in order. New Tour dates will be up soon...," she wrote.
Confirming the cancellation, Michelle said in a statement, "I try my best to push myself over the limit and if you don't listen to your body it will make you listen.