Windows Server Update Services System Requirements
Find the recommended hardware and software requirements for Windows Server Update Services (WSUS).
Server Requirements
500 or Fewer Clients
Processor
750 MHz Pentium III or higher processor; 1 GHz Pentium III or higher processor recommended.
Operating System
Microsoft Windows Server 2003 (Standard or Enterprise Edition). Microsoft Windows 2000 Server or Advanced Server with Service Pack 4 (SP4) or later.
Memory
512 megabytes (MB) of RAM; 1 gigabyte (GB) or more is recommended.
Other Devices
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More than 500 Clients
Processor
1 GHz Pentium III or higher processor; 3 GHz Pentium IV or higher recommended (dual processors recommended for more than 10,000 clients).
Operating System
Microsoft Windows Server 2003 (Standard or Enterprise Edition). Microsoft Windows 2000 Server or Advanced Server with Service Pack 4 (SP4) or later.
Memory
1 gigabyte (GB) of RAM or more.
Other Devices
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Software Requirements
Product Name
Details
Microsoft .NET Framework 1.1 SP1
WSUS requires .NET Framework 1.1 with SP1 installed.
Microsoft Background Intelligent Transfer Services (BITS) 2.0
WSUS requires BITS 2.0 and WinHTTP 5.1.
Microsoft Internet Explorer 6 SP1
WSUS requires Microsoft Internet Explorer 6 with SP1 installed on servers running Windows 2000 Server or Windows 2000 Advanced Server.
Internet Information Services (IIS) 5.0 or later
WSUS requires IIS 5.0 for servers running Windows 2000 and IIS 6.0 for servers running Windows Server 2003.
Database Software
WSUS requires database software. The Windows Server Update Services download includes a free version of Microsoft SQL Server, but only if you install on Windows Server 2003. Other options include installing Microsoft SQL Desktop Engine (MSDE) with at least Service Pack 3a (SP3a), which is also free, or SQL Server 2000 with at least SP3a. If you’re running Windows Server Update Services with Service Pack 1 (WSUS with SP1), you can use SQL Server 2005.
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