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An old password still works after you change it in Outlook Web Access
Article ID: 267568 - View products that this article applies to.
This article was previously published under Q267568
Important This article contains information about how to modify the registry. Make sure that you back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify 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
Assume that a user changes their password in Outlook Web Access (OWA) in one of the following versions of Microsoft Exchange Server:
This latency exists by design for Internet Information Services (IIS) performance reasons and is controlled by the following registry setting.
Warning If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.
For IIS performance reasons, the default setting is 15 minutes. Make sure that you weigh carefully the security implications versus the performance implications. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
152526Note If a user is still logged on when this registry key is set, that user's current Time to Live (TTL) token for that password remains the same as it was before the registry key was modified. The user is not affected until they close all instances of the browser, log on again, and change the password again. That new password will have the TTL of the registry key that was specified.
(http://support.microsoft.com/kb/152526/ )Changing the default interval for user tokens in IIS
Article ID: 267568 - Last Review: October 19, 2012 - Revision: 6.0