# System requirements ## **Operating system** The operating system must be fully installed and configured with the latest service packs and hot fixes. Single store installations are compatible with a 32-bit operating system. However, multi-store installations require a 64-bit operating system and are not compatible with a 32-bit operating system. * Windows 11 Professional or * Windows Server 2025 (Recommended) * Windows Server 2022 * Windows Server 2019 {% hint style="warning" %} Although RMH apps have been known to work on Windows 11 Home, the Home version of the Windows operating system is not recommended for running production workloads. In addition, Windows 11 Home is not recommended for hosting Microsoft SQL Server. Windows 10 will reach end of life on 14 October, 2025. After this date: * Microsoft will no longer provide security updates or official support. * RMH will not test or validate Windows 10 for compatibility. * Customers must upgrade to Windows 11 Professional or a supported Windows Server version to ensure compliance, stability, and security. {% endhint %} ## **Microsoft SQL Server** The SQL Server must be fully installed and configured with the latest service packs and hot fixes. * Microsoft SQL Server 2025 Standard (Recommended) * Microsoft SQL Server 2022 Standard * Microsoft SQL Server 2019 Standard or * Microsoft SQL Server 2025 Express (Recommended) * Microsoft SQL Server 2022 Express * Microsoft SQL Server 2019 Express {% hint style="info" %} Microsoft SQL Server Standard is required for databases that are 50GB or larger. Ensure firewall ports have been configured to allow TCP/IP traffic from Microsoft SQL Server. {% endhint %} ## **Hardware** You will need to increase memory as database size increases. These are the requirements for Retail Management Hero only; consider the resource requirements of all applications on the computer and increase memory and processor power accordingly.

Installed	Memory Minimum	Memory Recommended	Processor Minimum	Processor Recommended
Store Manager and POS standalone	4GB	>=8GB	Intel i3 or similar	Intel i5 or higher
Store Manager and POS with:Store Loyalty Manager	4GB	>=8GB	Intel i3 or similar	Intel i5 or higher
Central Manager standalone	4GB	>=8GB	Intel i3 or similar	Intel i5 or higher
Central Manager with:Central Loyalty Manager	4GB	>=8GB	Intel i3 or similar	Intel i5 or higher
Microsoft SQL Server standalone	4GB	>=8GB	Intel i5 or similar	Intel i7 or higher
Microsoft SQL Server with:Store Manager and/or; Central Manager	8GB	>8GB	Intel i5 or similar	Intel i7 or higher
Microsoft SQL Server with:Store Manager; Central Client Assistant	4GB	>=8GB	Intel i3 or similar	Intel i5 or higher
Microsoft SQL Server with:Central Server; Central Server Assistant	4GB	>=8GB	Intel i5 or similar	Intel i7 or higher
Central Server standalone	4GB	>=8GB	Intel i5 or similar	Intel i7 or higher

## **Disk space**

Application	Minimum Disk Space
POS	100MB
Store Manager	300MB
Central Manager	200MB
Central Server	30MB
Central Client	20MB
Flash Bridge	10MB
Loyalty Manager (Store or Central)	50MB

## **Other system requirements**

Application	Requirement
POS	POS for .NET Note: POS for .NET is different from the .NET Framework. It is a library that enables communication between OPOS devices like electronic cash drawers, printers, scanners, and scales. You can install POS for .NET from the installation wizard (Setup.exe).
POS, Store Manager, Central Manager, Central Server, Central Client, and Flash Bridge apps	.NET Framework 6.0 Install the following: ASP.NET Core Runtime 6.0 (Windows x64); .NET Desktop Runtime 6.0 (Windows x64) Alternately, install the .NET SDK (Windows x64), which provides all runtimes in one download package.
All Central Manager deployments	RMH Central should only be deployed in environments with internal connectivity across the stores. This can be accomplished either by a virtual private network (VPN) or by any other intranet solution offered through your Internet Service Provider (ISP). Note: The Flash-based Central Manager and Central Client also require a route to the internet for license validation. If you need to run these apps in environments where internet access is restricted, you should deploy an internal license server.

Application

Requirement

POS

POS for .NET

Note: POS for .NET is different from the .NET Framework. It is a library that enables communication between OPOS devices like electronic cash drawers, printers, scanners, and scales. You can install POS for .NET from the installation wizard (Setup.exe).

POS, Store Manager, Central Manager, Central Server, Central Client, and Flash Bridge apps

.NET Framework 6.0 Install the following: ASP.NET Core Runtime 6.0 (Windows x64); .NET Desktop Runtime 6.0 (Windows x64) Alternately, install the .NET SDK (Windows x64), which provides all runtimes in one download package.

All Central Manager deployments

RMH Central should only be deployed in environments with internal connectivity across the stores. This can be accomplished either by a virtual private network (VPN) or by any other intranet solution offered through your Internet Service Provider (ISP).

Note: The Flash-based Central Manager and Central Client also require a route to the internet for license validation. If you need to run these apps in environments where internet access is restricted, you should deploy an internal license server.

## Check which .NET components and versions are installed To check which .NET components are installed on a computer and what version they are: 1. Open Command Prompt or Windows PowerShell. 2. Type the following command and press Enter . The .NET components and versions are listed. `dotnet --info` {% hint style="info" %} The parameter has two dashes (--) in front of it, not one. {% endhint %} ![](/files/A3k7XWnjV7KE0lvVNb1M) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.rmhpos.com/installation/system-requirements.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.