Prerequisites - Margin Master

Margin Master Handbook

Introduction
Part I · Installing
Part II · Introducing the Main Window
Part III · Initial Configuration
Part IV · Customizing the Workspace
Part V · Basic Application Functionality
Part VI · Learning Margin Master
Part VII · Advanced Topics
Part VIII · Updates, Troubleshooting & Help
Appendix
Part I · Chapter 1 — Before You InstallUpdated 2026-08-28

Prerequisites

What is this?

A checklist of what a computer needs before Margin Master is installed. Most stores need nothing beyond a current Windows PC with an internet connection - Margin Master installs its own SQL Server for you - but reading this first avoids the two most common first-day problems: an unsupported SQL Server and a firewall that blocks the cloud.

The computer

Requirement Detail
Operating system Windows 10 or later, 64-bit (Windows 11 recommended)
Runtime .NET 10 Desktop Runtime. The installer adds it when it is missing; if it is later damaged, see Install or Repair .NET
Display 1280 x 800 minimum; the main window is a wide data grid, so more width helps
Disk A few GB free for the database and its backups. SQL Server Express plus SSMS need about 4 GB during installation
Rights Installing Margin Master, SQL Server or SSMS asks for an administrator (UAC) prompt. Day-to-day use does not

SQL Server

Margin Master keeps your data in a Microsoft SQL Server database on this computer (or on another computer on your store network).

  • Supported: SQL Server 2022 or 2025, Express or Standard edition.
  • Nothing installed? Margin Master installs SQL Server 2025 Express for you, as its own instance named MARGINMASTER, from SQL Server Tools. No separate download is needed.
  • Already have SQL Server? If it is 2022 or 2025 and belongs to Margin Master, it is upgraded in place. If it belongs to another program - a point-of-sale system's SQLEXPRESS, for example - it is never touched: Margin Master installs its own instance alongside it.
  • Older versions (2019 and earlier) are not supported. Support follows Microsoft's SQL Server support lifecycle: once Microsoft ends support for a version, so does Margin Master.

Express or a full license? Express is free and is the right choice for almost every store. Its 10 GB database limit and lack of scheduled maintenance only matter for very large multi-store databases - see SQL Server 2025 Express vs. Full License.

Some newer NVMe drives need a one-time Windows registry setting before SQL Server 2025 will install; SQL Server Tools detects this and asks before applying it. Details: Large Sector Drive Compatibility.

Internet and network

An internet connection is required for:

  • license validation at startup,
  • cloud vendor data sync (catalog and pricing),
  • automatic updates,
  • support issue submission.

Firewalls and content filters must allow Margin Master to reach marginmaster.com and its download and cloud endpoints over HTTPS. The complete list of addresses and ports is in Network & Firewall Requirements.

If another computer on the store network will open the same database, the SQL Server host also needs remote access enabled - see Enable Remote (LAN) SQL Access.

Your store details

Have these ready for the first launch:

  • your vendor store number (Ace Hardware, True Value or Do it Best member number),
  • your point-of-sale system and how it exports data or connects (covered per system in Part III),
  • the Margin Master license registered to your store - Margin Master validates it online the first time it starts.

Common Questions

Q: Do I need to buy or download SQL Server myself? A: No. Margin Master installs SQL Server 2025 Express for you the first time it cannot find a supported instance.

Q: My point-of-sale system already installed SQL Server. Can Margin Master share it? A: It will not. Margin Master never modifies a SQL Server it cannot prove is its own; it installs a separate MARGINMASTER instance beside it, which keeps the two products from interfering with each other.

Q: Can the database live on a different computer? A: Yes. Install SQL Server on the host, enable remote access, and point Margin Master at HOSTNAME\MARGINMASTER in Database Connection Setup.

Q: Will Margin Master work offline? A: Day-to-day pricing work does not need the internet. Startup license validation, vendor data sync and updates do.

Connect with us

Margin Master by RetailerSoft, Inc. © 2026. All rights reserved.

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