The page cannot be found in Infoview

In Business Objects XI, you may get an error saying The page cannot be found when trying to access InfoView or the Central Management Console. One cause for this problem is that, on Windows Server 2003, IIS 6.0 blocks .NET 2.o .aspx applications by default. To enable them, go to Administrative Tools -> Internet Information Services (IIS) Manager, click the Web Service Extensions, select ASP .NET v2.0xxxx and click Allow.

Detailed info on this operation:
http://www.microsoft.com/technet/prodtechnol/WindowsServer2003/Library/IIS/596ff388-bc4c-472f-b029-aea2b0418bea.mspx?mfr=true

Lots of 401.x errors on the IIS log

Substatus=2 and win32-status=2148074254 along with Substatus=1 and win32-status=0 means the packet exchange corresponds to normal NTLM authentication (Windows Integrated Authentication). If there are a lot of these, there is probably some configuration causing connections to close too soon.

IIS Server Application Unavailable

Ever got that error when running/debugging an ASP .NET application?
Try one of these methods:
- Check if ASP .NET 2.0 is correctly installed (aspnet_regiis -lv)
- See if the aspnet user has proper (read & execute) permissions over the application's directory - if he hasn't, the error won't be logged to the Event Log.
- See if the application pool for the virtual directory is correct (this problem produces a log entry identifiable in the Event Viewer)