---
title: "Virtual Machines. Guest OS Summary"
description: "The report provides summary information on guest operating systems for VMs deployed in your environment. The report analyzes virtual infrastructure configuration to show all types of guest OSes installed on VMs, and the number of VMs that run OS..."
canonical: "https://helpcenter.veeam.com/docs/mp/reports/vm_guest_os_summary_hyperv.html"
breadcrumb: "Veeam MP Report Knowledge > Veeam Hyper-V Analysis Reports > Virtual Machines. Guest OS Summary"
dateModified: "2026-09-10"
---

# Virtual Machines. Guest OS Summary

The report provides summary information on guest operating systems for VMs deployed in your environment.

## Description

The report analyzes virtual infrastructure configuration to show all types of guest OSes installed on VMs, and the number of VMs that run OS of a specific type.

## Parameters

Date/time Selection: defines the time period to analyze in the report.

Merge Editions: defines whether data in the report output will be broken down by OS edition. If you choose to merge editions, different editions of the same OS will be shown as one record in the report output.

Merge Bits: defines whether data in the report output will be broken down by OS bit count. If you choose to merge bits, 32-bit and 64-bit versions of the same OS will be shown as one record in the report output.

Count: defines the maximum number of guest OSes to display in the report output.

Scope: defines a list of Groups or Objects that will be analyzed in the report (by default, the **Veeam Hyper-V Hosts Group** group is selected). The **Add Group** option returns a Group and all objects that a group contains. The **Add Object** option returns only the selected object.

## Sample Usage

Report on top 10 most commonly used VM guest OSes in your environment. Use statistics for the previous two months as a ground for the report analysis.

### Instructions

1. Open the Virtual Machines. Guest OS Summary report.
2. From the **From** list, select *Previous month > First day*. From the **To** list, select *Today*.
3. From the **Merge Editions** list, select *No (Not merged)*.
4. From the **Merge Bits** list, select *No (Not merged)*.
5. In the **Count** field, enter *10*.
6. Leave the **Scope** section without changes.
7. Click **Run** to view the report.

**Report Output**

The report will show a top-10 list of guest operating systems installed on VMs in your environment. For each guest OS, the report will display a number of VMs which run the OS.