Error message when you try to install security update 917283 on a computer that is running Windows Server 2003 x64 Edition: "Error 1324. The folder 'Program Files' contains an invalid character" (923101)

SYMPTOMS

Consider the following scenario:

You are using a computer that is running Microsoft Windows Server 2003, Standard x64 Edition; Windows Server 2003, Enterprise x64 Edition; or Windows Server 2003, Datacenter x64 Edition.
You try to install the security update that is described in the following Microsoft Knowledge Base article:
917283 MS06-033: A vulnerability in ASP.NET could allow information disclosure

In this scenario, you receive an error message that resembles the following:

Error 1324. The folder 'Program Files' contains an invalid character

Additionally, security update 917283 is not installed.

RESOLUTION

To install security update 917283, follow these steps:

Temporarily unmount any drive volumes that you do not require. To do this, follow these steps:
1. Start Windows Explorer.
2. Right-click My Computer, and then click Manage.
3. Click Disk Management. A list of all drive volumes appears.
4. Identify any CD-ROM and DVD drive volumes that are configured on the computer. These drive volumes typically contain the text "CD-ROM" or "DVD" together with the drive letter. Note the drive letters so that you can restore the computer to its previous state when you are finished.
5. Right-click a CD-ROM or DVD drive volume, and then click Change Drive Letters.
6. Click Remove, and then click OK.
7. Repeat steps 1e and 1f for each CD-ROM and DVD drive.
Install security update 917283.
If you are prompted, restart the computer.
Remount the drive volumes. To do this, follow these steps:
1. Start Windows Explorer.
2. Right-click My Computer, and then click Manage.
3. Click Disk Management.
4. Right-click a CD-ROM or DVD drive volume, and then click Change Drive Letters.
5. Click Add.
6. Reassign the original CD-ROM or DVD drive letter, and then click OK.
7. Repeat steps 4d through 4f for each CD-ROM and DVD drive.

MORE INFORMATION

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

922481 Description of the security update for the ASP.NET development platform

923100 When you try to install security update 917283, the computer stops responding, or you receive a "0x643" error code on a computer that is running the .NET Framework 2.0