Trend Micro strongly recommends customers to use static license keys, MAK for OVAs. Here are some reasons why it is recommended not to use KMS licensing for Virtual Analyzer images:

Activation Renewal

VA instances will need to connect KMS host to renew its activation frequently, but it could cause any issue with false positive alerts and increased consumption of KMS licenses.

KMS Activation Renewal

According to the Microsoft article: Understanding KMS, in the KMS Activation Renewal section, it states that "KMS activations are valid for 180 days—the activation validity interval. To remain activated, KMS client computers must renew their activation by connecting to the KMS host at least once every 180 days.".

By default, KMS client computers attempt to renew their activation every seven days. If KMS activation fails , the client will retry every two hours. After a client computer’s activation is renewed, the activation validity interval begins again.

Minimum Requirement

To use KMS, it requires a minimum number of computers, both clients and servers. It’s not flexible.

According to the Microsoft article: Learn About Product Activation, in the Key Management Service section, it explains that "KMS requires a minimum number of computers (physical or virtual machines) in a network environment. The organization must have at least five computers to activate Windows Server 2008 R2 and at least 25 computers to activate clients that are running Windows 7. These minimums are referred to as activation thresholds..

Recommendations

• Install an Operating System. Do not install an Enterprise Edition of Windows 10 as it requires a License Server which is not supported by the Virtual Analyzer.
• You will need a MAK License Key (Multiple Activation Key) or a VDI License Key.