I can't install SQL Server 2005 Developer Edition

I copied the error I received.

SQL Server Setup cannot install files to the compressed or encrypted folder: C:\Program Files\Microsoft SQL Server\. To continue, make sure that your installation directories are not compressed or encrypted, or specify a different directory, and then run SQL Server Setup again.

C:\Program Files\Microsoft SQL Server\ is not an compressed or encrypted folder. I don't know what it is talking about. I just installed a fresh new copy of Windows XP Professional with Service Pack 2.

There are two things to check:

1) Open up Windows Explorer, right-click on the main drive (c:) and select properties. On the General tab near the bottom you'll see a check box labeled "Compress drive to save disk space" make sure this is unchecked. Note: if you have more than one drive you want to check the drive where "%Program Files%" lives. This may not be a the C drive.

2) Next, while still in Windows Explorer go to the root of where %Program Files% lives. This should probably be c:\. Right-click on "Program Files" and select Properties. Click the "Advanced..." button down in the Attributes section. Make sure the two check boxes in the "Compress or Encrypt attributes" group box are un-checked.

Dan|||Thanks a lot! It worked perfectly. |||I do not use any compression of encryption on the hard drive.

The 'C:\Program Files' directory is marked 'Read Only' ?

I have tried several times to install SQL Server 2005 Developer Edition

(most recently from MSDN Disk 3097.1) I have tried to complete an

uninstall before each attempt.

I have installed: IIS and .NET Framework 2.0

I have also used ..\aspnet_regiis -r to register ASP.NET

I am, successfully, running Visual Studio 2005.

I do get the warning about Minimum Hardware Requirement, but can find

nothing in the detail requirements to exclude my PCs configuration.

Any suggestions will be appreciated.