What's the minimum set of processes needed to run Windows XP?

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Summary: Windows XP is a complex and highly configurable operating system. The minimum set of processes it needs will vary depending on many things.

It seems I give this answer all too often.

The answer I keep giving?

"It depends."

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The processes that are needed to run windows depend entirely on the specifics of your machine, and what you do with it. What's a minimum set for me will probably not work for you, and vice versa.

The software that's running on your machine comes from several different places including:

• The Windows operating system itself.
• System "services", some of which are optional, some of which are not, all depending on your machine and needs.
• Programs that start automatically at start up. Again, some of which are optional, some of which are not, all depending on your machine and needs.

An additional confusion is that what kind of software goes in which of those places isn't clear. Hardware drivers and support software can be either embedded in Windows, a service, or a separate start-up application. Applications and utilities can be implemented as Windows Services, or as programs that run at startup, or as programs you run manually.

It all depends, and it's all very confusing.

So my approach to winnowing down what runs on my machine is this:

• Right-click My Computer, click Manage, expand Services and Applications, click on Services, and then click on the Status column header to sort all the "Started" services together. Now for each, I either turn off those I know I can, or I visit this XP Service List to try and learn whether or not I really need the service and act accordingly.
• Run a startup monitoring utility like autoruns from sysinternals and examine each of the items listed as being started automatically when the machine boots or when I log in. There are several that I know I can turn off, but for others I don't recognized, Startup Applications List is a handy reference with close to 7500 definitions.

Finally, another good resource is our old friend Google. Quite frequently, for any process that you find running on your machine, a quick Google search on the name of the process or filename will give you information about what the process is, and whether or not it's required.

Related:

• Ask Leo! - How can I tell what's running on my machine?

• Ask Leo! - What's this program running on my machine?

• Ask Leo! - What's all this stuff running after I boot Windows?

Article 3741 | Posted March 20, 2005