Microsoft KB Archive/942056

= Error message when you visit a Web site that is hosted on Internet Information Services (IIS) 7.0: &quot;HTTP Error 412 – Precondition failed&quot; =

Article ID: 942056

Article Last Modified on 9/26/2007

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APPLIES TO


 * Microsoft Internet Information Services 7.0

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SYMPTOMS
You have a Web site that is hosted on Internet Information Services (IIS) 7.0. When you visit the Web site, you may receive an error message that resembles the following:

Server Error in Application &quot; &quot;

HTTP Error 412 – Precondition failed.

HRESULT: 0x00000000

Description of HRESULT

No Description



CAUSE
The request is not completed because of the preconditions that are set in the request header field. In the request from the client computer, the If-Match request header field contains an entity tag. IIS cannot recognize the value of this entity tag.



RESOLUTION
To resolve this problem, examine the value of this entity tag to make sure that IIS can recognize the value.

Keywords: kbexpertiseadvanced kbexpertiseinter kbtshoot kbprb KB942056

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