OUTLOOK caused an invalid page fault in module EMALSCAN.DLL

then you’ve run into a problem related to McAfee VirusScan software, version 4.0.2. The error message may also refer to a page fault in Kernel32.dll.

Network Associates issued a Service Pack 2 for VirusScan to correct the problem by replacing several key files. Read V98sp2.txt for the full details, then download V98sp402.zip from Network Associates’ FTP site. If you’re using a later version, it should already contain this fix.

In case you have a problem getting or installing the service pack, here is the original solution, thanks to MVP Vince Averello and other users active in the microsoft.public.outlook* newsgroups:

Microsoft Outlook98 may be set to receive email through the POP3 mail protocol which downloads mail from the internet. By default VirusScan installs the MAPI On-Demand E-mail scan in Outlook, which will not function with the POP3 mail protocol. For POP3/Internet mail, Download Scan should be used instead.

To correct this, change e-mail scanning from MAPI to Download by following these steps:

1. Right click on the Vshield icon in the system tray, and choose Properties | E-mail Scan.
2. Check Enable Scanning of E-mail Attachments.
3. Clear the box for Microsoft Exchange (MAPI).
4. Check Internet Mail, which will enable Download Scanning.
5. Click Apply, then OK.

You must also disable the MAPI On-Demand E-mail Scan add-in in Outlook. Here’s how:

1. In Outlook 98, choose Tools | Options, then switch to the Other tab.
2. Click Advanced Options, then Add-In Manager.
3. Clear the box for Exchange Scan, then click OK until you return to Outlook’s main window.

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Last reviewed on Sep 13, 2011