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How to install SQL Server 2000 for a MU Online server

SQL Server 2000 still runs old MU Online servers. See how to install it, with the compatibility caveats on modern Windows.

VI ViciadosMU Team · Updated on 30 jun 2026 · ⏱ 9 min read

SQL Server 2000 is the database of MU Online's oldest versions. Though discontinued, it's still used on classic servers whose distributions were made for it.

Atenção: SQL Server 2000 is very old and unsupported. Use it only if your distribution requires it. For most cases, SQL Server 2008 R2 is safer and more compatible — see the dedicated tutorial.

When to use SQL 2000

  • Classic distributions (0.97/0.99) prepared specifically for it;
  • Old tutorials and files that weren't migrated;
  • Study environments of MU's "golden era".

Prerequisites

  • Preferably Windows XP / Server 2003 (real or in a virtual machine) for maximum compatibility;
  • Administrator permission;
  • The SQL Server 2000 installer + Service Pack 4 (SP4).

Step by step

  1. Install SQL Server 2000 choosing the default instance;
  2. In authentication mode, select Mixed Mode and set the sa password;
  3. Finish the installation;
  4. Apply Service Pack 4 (SP4) — essential for stability and fixes;
  5. Install the Enterprise Manager / Query Analyzer (the era's tools) to manage.
Atenção: Without SP4, SQL 2000 has known flaws. Never run in production without applying it.

Compatibility on modern Windows

On Windows 10/11, SQL 2000 may not install or may be unstable. Alternatives:

  • Run in a virtual machine with Windows XP/2003;
  • Use compatibility mode (results vary);
  • Migrate the distribution to SQL Server 2008 R2 (recommended).
Dica: If you're starting today, prefer SQL Server 2008 R2: it runs the same classic servers with much less hassle. Reserve SQL 2000 for cases where the distribution truly requires it.

Security

Being unsupported, SQL 2000 has known vulnerabilities. Never expose its port to the internet and keep it isolated behind a firewall.

Next steps

With the database installed, go to configure SQL Server for MU Online (restore database + user) and then configure MuServer.

Perguntas frequentes

Does SQL Server 2000 still work for MU Online?

Yes, for very old versions (0.97/0.99 and classic distributions) that were made for it. But it's a discontinued version and requires extra compatibility and security care.

Can I install SQL Server 2000 on modern Windows?

With caveats. On recent Windows it may require compatibility mode, manual tweaks or a virtual machine with old Windows (XP/2003) to run stably.

VI

ViciadosMU Team

Equipe editorial do ViciadosMU — portal de MU Online no ar desde 2003.

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