Discovering and securing on-premises Microsoft solutions is paramount in today’s cybersecurity landscape.

In this article, we delve into ‘msprobe,’ a powerful tool designed to aid in the identification of on-prem Microsoft products.

With its versatile modules, ‘msprobe’ empowers security professionals to pinpoint and assess potential vulnerabilities, ensuring robust protection for organizations.


Finding all things on-prem Microsoft for password spraying and enumeration.

The tool will used a list of common subdomains associated with your target apex domain to attempt to discover valid instances of on-prem Microsoft solutions. Screenshots of the tool in action are below:


Install the project using pipx

pipx install git+


The tool has four different modules that assist with the discovery of on-prem Microsoft products:

  • Exchange
  • RD Web
  • ADFS
  • Skype for Business

The help menu and supported modules are shown below:

Usage: msprobe [OPTIONS] COMMAND [ARGS]...

  Find Microsoft Exchange, RD Web, ADFS, and Skype instances

  --help  Show this message and exit.

  adfs   Find Microsoft ADFS servers
  exch   Find Microsoft Exchange servers
  full   Find all Microsoft supported by msprobe
  rdp    Find Microsoft RD Web servers
  skype  Find Microsoft Skype servers


Find ADFS servers associated with apex domain:

msprobe adfs

Find RD Web servers associated with apex domain with verbose output:

msprobe rdp -v

Find all Microsoft products hostsed on-prem for a domain:

msprobe full