Knowledgebase

Rundll32 Has Performed an Illegal Operation

When you install Dial-Up Networking using the Add/Remove Programs tool in Control Panel, you may experience the following symptoms:

When you double-click Make New Connection in Dial-Up Networking, you may receive the following error message:

  • Rundll32 has performed an illegal operation and will be shut down.

When you attempt to connect to the Internet and you have Dial-Up Networking configured to dial automatically, you may receive one of the following error messages:

  • Rnaapp.exe caused an invalid page fault in module kernel32.dll
  • Rnaapp caused an invalid page fault in module rnaapp.exe.

These error messages can occur if you are running the retail version of Windows 95, and you install Dial-Up Networking using a Microsoft Windows 95 OEM Service Release 2 (OSR2) CD-ROM.

To resolve this behavior, use one of the following methods:

Obtain the Dial-Up Networking 1.3 Performance and Security Update from the following Microsoft Web site:
http://www.microsoft.com/windows95/

and/or

Uninstall Dial-Up Networking using the Add/Remove Programs tool in Control Panel, and then install Dial-Up Networking using a retail version of Windows 95.
NOTE: If you receive any file version conflict messages, click No to replace the existing files on the hard disk.