Though exploratory testing comes with so many benefits, it is bound to have some negative points to it.
Here are some of the disadvantages and challenges of Exploratory testing:
Exploratory methods strictly depend on skillful testers.
Testers would have to be thoroughly knowledgeable about the application being tested.
Reporting the outputs of executed tests can be a challenge when there is a documented basis to begin with.
It is not suitable for long execution periods.