CAUSE
This
problem occurs after you apply the Microsoft Internet Explorer Security Update MS04-004.
For additional information about the Microsoft Internet Explorer Security Update MS04-004, click the following article number to view the article in the Microsoft Knowledge Base:
832894
MS04-004: Cumulative security update for Internet Explorer
This problem also occurs after you apply the hotfix in the following Microsoft Knowledge Base article:
821814 You receive a "Page cannot be displayed" error message when you post to a site that requires authentication
This security update (MS04-004) and
the hotfix change how the Wininet.dll file retries POST requests with a blank
header when a Web server resets the connection.
RESOLUTION
To resolve this problem, install the hotfix in the following Microsoft Knowledge Base article on
the client computer:
831167 Wininet retries POST requests with a blank header
REFERENCES
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
306039
PRB: Long running OLAP queries do not return data when connected through HTTP