Article ID: 318515 - View products that this article applies to.
This article was previously published under Q318515
If you use Outlook 2000 Service Release 1 (SR-1) or Microsoft Outlook 2000 Service Release 1a (SR-1a) and you open a message, you may receive the following error message:
NOTE: Both Outlook 2000 SR-1 and Outlook 2000 SR-1a include a new security feature that blocks attachments that are potentially unsafe. This security feature provides an additional level of protection against malicious messages.
Outlook blocked access to the following potentially unsafe attachments: [...]
This behavior occurs because the message contains a file type that is blocked by either Outlook 2000 SR-1 or Outlook 2000 SR-1a.
Although Outlook 2000 SR-1 or Outlook 2000 SR-1a blocks access to the attachment, the attachment still exists in the message. Use one of the following recommended methods to obtain access to the attached file:
NOTE: To use this method, one of the following conditions must be true:
How to Customize the Attachment Security BehaviorTo customize the attachment security behavior in Outlook 2000 SR-1 and Outlook 2000 SR-1a, install a fix, and then modify the registry.
To resolve this problem, obtain the latest service pack for Microsoft Office 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
276367The English-language version of this fix has the following file attributes or later:
(http://support.microsoft.com/kb/276367/ )How to obtain the latest Office 2000 service pack
After the fix is installed, the files have the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.
Date Time Size File name -------------------------------------------------- 26-Feb-2002 00:56 2,641,920 Outlook.msp 26-Feb-2002 01:03 7,715,328 Outlook_admin.msp
This fix is also available in the French language.
Date Time Version Size File name -------------------------------------------------------------- 14-Jun-2000 17:11 184.108.40.206 41,472 Bjablr32.dll 14-Jun-2000 17:12 220.127.116.11 61,952 Bjlog32.dll 08-Jan-2001 21:37 18.104.22.168 98,304 Bjsrch32.dll 28-Apr-1999 01:12 22.214.171.124 32,768 Cabextract.exe 19-Jun-2000 18:49 5.5.2652.65 716,560 Cdo.dll 19-Jun-2000 18:12 5.5.2652.65 808,720 Cdo.dll_0004 02-Dec-2001 02:00 126.96.36.19930 127,027 Contab32.dll 14-Jun-2000 17:14 188.8.131.52 183,808 Emablt32.dll 31-Aug-2000 19:43 5.5.3142.0 154,112 Emsabp32.dll 05-Oct-2001 10:33 5.5.3165.0 594,192 Emsmdb32.dll 02-Jun-2001 01:15 5.5.3159.0 131,344 Emsui32.dll 02-Jun-2000 10:45 184.108.40.20601 86,067 Envelope.dll 18-Dec-2001 23:19 5.5.3167.0 540,944 Exsec32.dll 05-Apr-2000 19:02 220.127.116.1105 192,561 Mimedir.dll 21-May-2001 18:20 5.5.3157.0 792,576 Msmapi32.dll 21-May-2001 18:16 5.5.3157.0 623,104 Msmapi32.dll 08-Jul-2000 03:07 5.5.3138.0 602,384 Mspst32.dll 08-Jul-2000 03:03 5.5.3138.0 528,656 Mspst32.dll 01-Feb-2000 01:26 18.104.22.16831 196,661 Oladd.fae 23-May-2000 15:20 150,690 Olexchng.aw 30-May-2000 18:53 26,643 Olsec9.chm 22-May-2000 23:35 170,617 Olxchng9.chm 08-Feb-2001 17:18 5.5.3153.0 454,144 Omi9.dll 08-Feb-2001 17:21 5.5.3153.0 548,352 Omint.dll 13-Nov-2001 11:45 8.30.3165.0 782,608 Outex.dll 23-May-2000 23:19 554,068 Outlhlp.aw 22-Feb-2002 08:18 22.214.171.12421 5,337,138 Outllib.dll 01-Sep-2001 00:02 126.96.36.19930 1,675,315 Outllibr.dll 17-Jun-2002 09:34 6,991,696 Pcw_cab_h8000_1.cab 13-Jul-2001 09:48 9.0.5512.0 368,691 Pstprx32.dll 21-Jun-2001 22:01 188.8.131.5221 73,772 Rm.dll 02-Jun-2000 11:30 184.108.40.20601 65,586 Sendto9.dll
Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/322756/ )How to back up and restore the registry in Windows
After you apply this fix, use the Level1Remove and Level1Add registry keys to customize the attachment security behavior.
Follow these steps to use the Level1Remove registry key to allow Outlook 2000 to open file types that would otherwise be blocked:
NOTE: Microsoft recommends that you only enable the file types that you need for access. If a particular file type is received rarely, Microsoft recommends that you give Outlook 2000 temporary access to the file type in question and then undo the changes that you made to the Windows Registry to reconfigure to the blocked state.
Follow these steps to use the Level1Add registry key to configure Outlook 2000 to not open file types that would otherwise be assessable:
Microsoft Exchange Server EnvironmentIf you run Outlook in an Exchange Server environment, your administrator can change the default attachment security behavior. For additional information about how to configure Outlook 2000 in an Exchange Server environment, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/263297/ )Administrator info about e-mail security features
This behavior is by design. This problem was first corrected in Microsoft Office 2000 Service Pack 3 Service Pack 3.
For additional information about the Outlook E-mail Security Update, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/262631/ )Information about the Outlook E-mail Security update
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