OL98: Troubleshooting Security Issues in Outlook 98
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The information in this article applies to:
Microsoft Outlook 98
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Summary
This article provides answers to some common questions in troubleshooting
security issues in Microsoft Outlook 98.
I Get a Warning When I Open Messages or Attachments
I Can't Open a Message That Was Sent to Me Using Security
I Can't Send a Message Using Encryption
ActiveX Controls, Java Applets and Scripts in Messages Don't Work
When I Try to Open E-mail Messages I Get a Signature Failure Message
More Information
I Get a Warning When I Open Messages or Attachments
You may need to change the security zone settings.
For steps to change your security zone setting see the section,
"Changing Your Security Zone Settings" below.
You may need to change the setting for attachments.
For steps to change your security zone setting see the section,
"Changing the Attachment Security Setting" below.
When a secure e-mail message does not open properly, an error message
appears that describes the problem. A red X defines which part of
the certificate has a problem.
You may have to change the trust levels for the sender. In the
Certificate dialog box that appears, click Edit Trust, and then
click "Explicitly trust this certificate."
I Can't Open a Message That Was Sent to Me Using Security
When a secure e-mail message does not open properly, an error message
appears that describes the problem. A red X defines which part of
the certificate has a problem. To remedy this you may need to do
one of the following:
You may need to change the trust levels for the sender. In the Certificate
dialog box that appears, click Edit Trust, and then click "Explicitly
trust this certificate."
The sender's certificate may have expired. In the Certificate dialog
box that appears, click View Certificate. Click the Details tab,
and then look at the Valid From date.
I Can't Send a Message Using Encryption
To send an encrypted message to a recipient, you must have a copy
of the recipient's digital ID stored with the address in your contact
list or address book. If you have more than one entry for the recipient,
you must use the one that has the digital ID.
For additional information, please see the following article in
the Microsoft Knowledge Base:
Q182356 OL98: Encryption and Message Security Overview
ActiveX Controls, Java Applets and Scripts in Messages Don't Work
Your security zone setting may be set to the highest level, which
disables all active content in HTML messages.
For steps to change your security zone setting see the section,
"Changing Your Security Zone Settings" below.
When I Try to Open E-mail Messages I Get a Signature Failure Message
When a secure e-mail message does not open properly, an error message
appears that describes the problem. A red X defines which part of
the certificate has a problem.
You may have to change the trust levels for the sender. In the Certificate
dialog box that appears, click Edit Trust, and then click "Explicitly
trust this certificate."
The sender's certificate may have expired. In the Certificate dialog
box that appears, click View Certificate. Click the Details tab,
and then look at the Valid From date.
Changing Your Security Zone Settings
On the Tools menu, click Options.
Click the Security tab, and then click Zone Settings.
Click to select Medium to be warned before running potentially damaging
content, or Low to run content without warning.
Changing the Attachment Security Setting
On the Tools menu, click Options.
Click the Security tab.
Click Attachment Security.
High security (recommended) will warn you of potential security
issues with attachments.
None (not recommended) offers no protection from potential security
problems. Use this setting only if you are sure all messages you
receive are safe.
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