When using Hyper-V, which of the following is NOT a common issue?

When utilizing Hyper-V, it is crucial to understand the common problems that can arise in a virtualized environment. Insufficient network addresses can be an issue in some specific scenarios; however, it is generally not considered a common problem within the context of Hyper-V. This is because network configurations for virtual machines often allow for flexibility and planning to prevent address exhaustion. Additionally, network address allocation is typically managed effectively through DHCP or static assignments, minimizing the risk of not having enough addresses available.

In contrast, other common issues like insufficient RAM, communication failures between virtual machines, and storage capacity exceeding limits more frequently occur as they directly impact the host's performance and the virtual machines’ functionality. Limits on RAM can hinder the ability to run multiple virtual machines effectively, while communication failures can stem from misconfigurations in virtual switches or firewalls, and exceeding storage capacity can interrupt operations entirely, leading to data loss or unavailability. Each of these issues necessitates careful consideration in the setup and maintenance of Hyper-V environments, while the lack of available network addresses is relatively less impactful when properly managed.