On Windows 2003 server with IIS, delete some of the trusted root certificates in the trusted root store for the machine that you are not using in your environment.
1. Add the Certificates snap-in to the Microsoft Management Console.
a. Click the Start button, click Run, type mmc, and click OK.
b. Click the File menu, and select Add\Remove Snap-in.
c. Click the Add button, then select the Certificates snap-in and click Add
d. Select Computer Account and click Next
e. Click Finish.
f. Click Close.
g. Click OK.
2. Expand Certificates (Local Computer).
3. Expand Trusted Root Certification Authorities.
4. Click on Certificates.
5. Backup and then delete trusted root certificates that you are not using in your environment.
NOTE: There are some root certificates that are required by Windows. See ME293781
to see the trusted root certificates that are required by Windows Server 2003, by Windows XP, and by Windows 2000.