Microsoft have released a Knowledge Base Article on this subject 269411 'Windows 95 Clients May Hang After Upgrade to Service Pack 2.' This article handles problems with Windows 95 clients hanging during Hardware Inventory, when an Outlook attachment is opened or when an Office document is opened in Explorer.

The hotfix detailed in this article can be obtained from Microsoft if you are experiencing the problems detailed in the article, which become visible in the "Hin32.log" file on the client:

WARNING 1 - Failed to update new cycle info !!! Hardware Inventory Agent 7/24/2000 11:49:37 AM 4294127983 (0xFFF3316F)

ERROR 1 - Cannot get schedule for previous cycle !! Hardware Inventory Agent 7/24/2000 11:49:37 AM 4294127983 (0xFFF3316F)

This problem also appears to affect Windows 98 clients as well.

The "hanging" problem apparently doesn't exist if you disable Hardware Inventory on Windows 95 clients.

An alternative "fix" to the "hanging" problem is:

1. Remove the SMS 2.0 client using "20clicln.bat".

2. Delete all traces of the SMS client from the machine such as Registry entries and the directory structure.

3. Install DCOM 1.3 and reboot.

4. Install WMI 1.5 and reboot

5. Install the SMS 2.0 client then reboot.