Microsoft KB Archive/191566

Knowledge Base

PRB: Cannot Access Network Resource If Client Certificate Mapped

Article ID: 191566

Article Last Modified on 6/30/2004

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APPLIES TO

• Microsoft Internet Information Server 4.0
• Microsoft Internet Information Services 5.0

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This article was previously published under Q191566

SYMPTOMS

Active Server Pages (ASP) access to network resources fails if the application is running a Secure Sockets Layer (SSL) session that utilizes a client certificate that is mapped to a Microsoft Windows NT account.

Examples of errors include the following:

• If you use Scripting.FileSystemObject to access a file that is stored on a network share, you receive the following error message:

  Server object error 'ASP 0177:800a0046'
  Server.CreateObject Failed

• If you access a Microsoft Access database on a network server, you receive the following error message:

  Microsoft OLE DB Provider for ODBC Drivers error '80004005'
  
  [Microsoft][ODBC Microsoft Access 97 Driver] The Microsoft Jet
  Database engine cannot open the file '******'. It is already opened
  exclusively by another user, or you need permission to view its data.

For additional information on accessing network resources from IIS, click the article number below to view the article in the Microsoft Knowledge Base:

158229 INFO: Security Ramifications for IIS Applications

CAUSE

These errors occur because the Client Certificate Mapping process performs a NETWORK logon when it impersonates the mapped userid. A NETWORK logon disallows access to resources outside of those that exist on the local computer.

RESOLUTION

To work around this issue, move data locally, or do not map your client certificate to a Windows NT account. Other options include using Anonymous or Basic authentication.

Keywords: kbprb KB191566

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