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 Learn how to use Mac OS X Server’s Software Update service with clients running a variety of OS versions.

If you are having trouble installing iTunes or QuickTime for Windows, follow the troubleshooting suggestions described in this article.

When iCal is configured to use a Microsoft Exchange server account, all busy times for invitees may not appear when viewing invitees’ free/busy times in the Availability window. This may happen when invitees are already busy in the time slot for which a meeting is being created.

Mac OS X v10.6 Snow Leopard includes software for many printer and scanner models.  This software can be installed from the Snow Leopard Install DVD, and installed or updated by using Software Update (some models have software available through Software Update only).  
This article lists software provided for printers and scanners as of 15 March, 2010.
To view the complete list of printers and scanners that are supplied with Snow Leopard Install DVD and by Software Update, see below or use your browser’s Find feature to look for a specific name or model number. If you cannot find a driver for your specific model, check the list to see if a driver is available for a series of printers that may include your model.  For example, a printer with the model number 5070 might use the driver for the "5000 Series."
For more information about setting up and using printers in Snow Leopard, see this article.
For information about troubleshooting printer setup issues, see this article.

This article provides some general suggestions when trying to troubleshoot an issue where iTunes for Windows Vista or Windows 7 won’t launch or unexpectedly quits or freezes. It may be useful to print this document before following the steps outlined below.
For a discussion of troubleshooting iTunes for Windows in Windows XP, see iTunes for Windows XP: Troubleshooting unexpected quits, freezes, or launch issues.
If you are having trouble installing iTunes, see Trouble installing iTunes or QuickTime for Windows.

Learn how to cleanly uninstall iTunes, QuickTime, and other essential software components from your Windows Vista or Windows 7 PC; (for a Windows XP or Windows 2000 PC, refer to Removing and Reinstalling iTunes, QuickTime, and other software components for Windows XP).

Some file scanning software products that are not made by Apple, such as the Sony VAIO Entertainment Platform, may damage your iTunes library.  If the library becomes damaged, iTunes may create a new, empty library. 
Although the library appears empty, the media files should still be in their original locations.  By default, this would be the iTunes Media folder. For more information on iTunes files and folders, please refer to the following articles: What are the iTunes library files? and Where iTunes for Windows stores your iTunes library.

iTunes for Windows (XP, Vista, and 7) installs some processes that run in the background. Below is a brief explanation of what each process does.

When installing iTunes for Windows, the installation may not complete and Windows may display the following message: "iTunesSetup.exe is not a valid Win32 application."

After installing iTunes 9.0.3, Ringtones may no longer authorize to play in iTunes.