You may receive the "Installation error 25003" error message when you install Visual Studio .NET (827076)

SYMPTOMS

When you install Microsoft Visual Studio .NET, you may receive an "Installation Error 25003" error message. This problem may occur if files are not copied correctly during the installation process.

This article discusses important information about how to troubleshoot this error message. More information about Visual Studio .NET installation is available from MSDN, the Microsoft Developer Network.

For more information, visit the following MSDN Web sites:

Installation and Setup
http://msdn.microsoft.com/library/en-us/vsintro7/html/vxoriinstallationsetup.asp

Visual Studio .NET Hardware Requirements
http://msdn.microsoft.com/library/en-us/vsintro7/html/vxorivisualstudionetsystemrequirements.asp

Visual Studio .NET Software Requirements
http://msdn.microsoft.com/library/en-us/vsintro7/html/vxtbsvisualstudionetsoftwarerequirements.asp

RESOLUTION

Tips for How to Troubleshoot Installation Error 25003

The following are various methods to resolve this problem:

Make sure that the installation media that you are using (such as CD-ROM) is not corrupted.

For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
284230 INFO: Replacing Damaged or Defective Visual Studio Product Disks
Make sure that the other programs that are installed on your computer (such as antivirus programs) are not causing any problems. If an antivirus program is running while Visual Studio .NET Setup or the Microsoft .NET Framework Setup is running, the installation may fail.

For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
330733 PRB: Visual Studio .NET 2003 Setup May Fail When Antivirus or Firewall Program Is Running
If you are installing Visual Studio .NET from a CD-ROM, copy the contents of the CD-ROM to your hard disk, and then start the installation from the hard disk.
If you have more than one CD-ROM drive, try to start the installation of Visual Studio .NET from a different CD-ROM drive.
Make sure that the CD-ROM drive can read the data correctly from the installation CD-ROM.
If you try to run Setup from a shared CD-ROM drive over a network to other computers, the installation may fail. Copy the setup files to a hard disk, and then run Setup from the hard disk over the network.

For additional information, click the following article numbers to view the articles in the Microsoft Knowledge Base:
812820 HOW TO: Install Visual Studio .NET on a Network Computer
814703 BUG: "Source File Not Found" Error Message When You Install Visual Studio .NET from a Shared CD-ROM Drive
307372 HOW TO: Create a Network Installation Point for Visual Studio .NET Setup

REFERENCES

For additional information, click the following article numbers to view the articles in the Microsoft Knowledge Base:

312779 INFO: Visual Studio .NET Readme (Part 1)

316250 INFO: Visual Studio .NET Readme (Part 2)

319714 HOW TO: Troubleshoot Visual Studio .NET Installation

318913 PRB: Error Message: A Failed Installation Has Been Detected

304576 HOWTO: Troubleshoot the Windows Component Update for Visual Studio .NET