Installing > Installing System Architect XT > Verifying System Architect XT website properties in IIS > 3: Setting the default page for System Architect XT website manually
  
3: Setting the default page for System Architect XT website manually
1 Click the Default Document icon.
2 Make sure Default Document is Enabled and that the file name Default.aspx is in the list.
3 If the Default.aspx is not in the list of files, click Add.
4 Enter Default.aspx, and then click OK.
Next
4: Verifying that type .SVG MIME is present
See also
Verifying System Architect XT website properties in IIS