This problem occurs because client-side script files that are in the Web site are not synchronized with the .NET Framework 1.1. The PostBack event on client-side validation is stopped.
To resolve this problem, install the client-side scripts to the Aspnet_client subfolder of each Microsoft Internet Information Services (IIS) site folder. To do this, click
Start, click
Run, type the following command in the
Open box, and then click
OK:
C:\WINDOWS\Microsoft.NET\Framework\v1.1.4322.aspnet_regiis.exe -c
If you use source control, the "aspnet_regiis.exe –c" command might not work because script files are considered read only. If the command does not work, remove the Aspnet_client folder from source control.
Microsoft has confirmed that this is a bug in the Microsoft products that are listed in the "Applies to" section.