A hotfix is meant to solve only the issue that is definitely discussed in an linked Microsoft Know-how Base post (KB). To find out more about a particular hotfix, and To find out more Which might be necessary for those who didn't install the setup update, see the following KB https://fellowfavorite.com/story21176251/how-much-you-need-to-expect-you-ll-pay-for-a-good-contol-crm