The subject action happens, even if banners are disabled in Control Panel / CSNW.

Use the following work around:

Rename %SystemRoot%\System32\Nwprovau.dll to Nwprovau.SP5.

If you have a SP5 uninstall folder (%SystemRoot%\$ntservicePackUninstall$) AND SP4 was previously installed, then copy %SystemRoot%\$ntservicePackUninstall$\Nwprovau.dll to %SystemRoot%\System32\Nwprovau.dll.

If either of the above are not true, locate a SP4 CD-ROM and copy <Drive:>\I386\Nwprovau.dll to %SystemRoot%\System32\Nwprovau.dll.