Can i run window app desktop on Novacloud Windows instances?

Yes, you can install and run a Windows desktop application on Windows instance. However, please note the following:

• Our Responsibility:
  We provide and manage the server infrastructure, ensuring the Windows instance is operational and accessible.
• Customer Responsibility:
  The installation, configuration, and management of any applications on the server are the customer’s responsibility. This includes ensuring application compatibility, licensing, and troubleshooting.
• Support for Applications:
  While we can assist with server-related issues, such as network or performance troubleshooting, we recommend contacting the application vendor for application-specific support.

For more details explanation, kindly refer https://www.ipserverone.com/shared-security-responsibility/