Thank you for your answer.
There was one user who is guest member as global admin.
I created a user as tenant member and, deleted guest member.
But there was still the problem.
I created support request, and the cause of the problem has been clarified.
Microsoft Support Engineer said
Windows Store Subscription was associated with my tenant.
I asked Microsoft to remove Windows Store subscription from my tenant.
It's almost resolved.
Very thanks, ricardosolisvillegas-4678, sikumars-msft.