When an application is configured to run out-of-process
(that is, in medium or high isolation), the application may stop responding
(hang) or cause Web browser requests to time out. Refreshing the browser
appears to correct the problem, but the problem appears more frequently with a
heavier load on the server.
This occurs in the Dllhost.exe process that is hosting the
application because Asynchronous Procedure Calls (APCs) can inadvertently alert
a worker thread that is responsible for cleaning up Web Application Manager
(WAM) requests. When this occurs, the WAM_REQUEST
objects can be leaked.
Service Pack Information
To resolve this problem, obtain the latest service pack for Microsoft Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
How to Obtain the Latest Windows 2000 Service Pack
To resolve this problem, obtain Microsoft COM+ Rollup Hotfix
To work around this problem, set the application protection
for the application to Low. When you do this, COM+ does not have to marshal
data between the Inetinfo.exe and Dllhost.exe processes.
confirmed that this is a problem in Microsoft Internet Information Services
This problem was first corrected in Microsoft Windows 2000 Service Pack 4.
For additional information about how
to obtain a hotfix for Windows 2000 Datacenter Server, click the article number
below to view the article in the Microsoft Knowledge Base:
Datacenter Program and Windows 2000 Datacenter Server Product