This article lists the problems that are fixed in Microsoft Internet Security and Acceleration (ISA) Server 2006 Service Pack 1 (SP1). Service packs are cumulative. This means that the problems that are fixed in a particular service pack are also fixed in later service packs.
This article contains a list of Microsoft Knowledge Base articles that apply to ISA Server. The problems that are described in these articles are fixed in ISA Server 2006 Service Pack 1 (SP1).
For more information about how to obtain ISA Server 2006 Service Pack 1, click the following article number to view the article in the Microsoft Knowledge Base:
How to obtain the latest Internet Security and Acceleration (ISA) Server 2006 service pack
For more information about the hotfixes and updates that are included in ISA Server 2006 Service Pack 1 (SP1), click the following article numbers to view the articles in the Microsoft Knowledge Base:
Users who do not have the appropriate permissions can receive restricted content from ISA Server 2004
Error message in response to some HTTP requests on client computers that are running ISA Server 2004 as a proxy server: "400 Bad Request"
A client computer takes longer than expected to connect to a Web site through an ISA Server 2004 Web proxy server
You receive a blank page when your Web browser submits a POST request to an ASP Web site over an ISA Server 2004 access rule that requires client authentication
An ISA Server 2004 Web chaining rule may not redirect requests to the specified port
Error message in SecureNAT clients after you configure a Web chaining rule to forward HTTP as HTTPS in ISA Server 2004: "The target principal name is incorrect"
A large file download fails when an ISA Server 2004 SOCKS client computer uses passive mode FTP
The Microsoft Firewall service stops responding to client computer requests and Event IDs 7034, 14057, and 1000 are logged after you publish an Outlook Web Access server in ISA Server 2004
A client computer may not be authenticated by ISA Server 2004 when you use integrated Windows authentication
Client computers cannot download attachments when you use ISA Server 2004 or ISA Server 2006 forms-based authentication and run a third-party OWA add-in program to manage attachments
One or more published sites may stop being available if you create more than 300 Web site publishing rules in ISA Server 2006 Enterprise Edition
Users may receive slow responses when you enable the Cache Array Routing Protocol in ISA Server 2004, Enterprise Edition
You receive an error message when you try to install or to run Windows Vista: "The Software Licensing Service reported that the license is invalid"
You cannot apply an OWA Web publishing rule that redirects users who connect to the root of the OWA Web site to an internal folder by using ISA Server 2006
When an Internet Security and Acceleration Server 2004 client performs an action that uses the HTTP POST method, the action may be performed multiple times
An ISA Server 2004 downstream server does not reuse the TCP connections to a third-party upstream server
The authentication delegation in the existing Web publishing rules does not work after you upgrade ISA Server 2004 Enterprise Edition to ISA Server 2006 Enterprise Edition
Error message when you try to access Web sites through a downstream server after you enable hotfix 927265 on an upstream server that is running ISA Server 2004: "502 Proxy Error"
An update enables multicast operations for ISA Server integrated NLB
Error message when you try to visit a Web site that is published in ISA Server 2004: "HTTP error 500: network name no longer exists"
The "401 Authentication Required" response that is sent by a Web site is dropped when you use ISA Server 2004 as a Web proxy
In ISA Server 2006, you cannot set a session time-out for private computers in a Web listener that has the RSA SecurID authentication method configured
An ISA Server 2006 computer may stop responding under a heavy load
After an ISA Server 2006 application filter establishes an HTTP connection, the connection closes before it can be used, and a "0x80004001 (E_NOTIMPL)" status code is logged
Only 1,000 PPTP ports and 1,000 L2TP ports are open in Routing and Remote Access if the maximum number of VPN clients is set to more than 1,000 in ISA Server 2006
Web pages do not appear as expected when you publish a Web site by using a publishing rule in Internet Security and Acceleration (ISA) Server 2006
A user cannot access a Web site that is published in ISA Server 2006 by using Kerberos constrained delegation if the user is not in the same domain as the ISA Server computer
POST requests that do not have a POST body may be sent to a Web server that is published in ISA Server 2006
The Microsoft Firewall service stops unexpectedly on a computer that is running ISA Server 2004
You cannot filter the RPC traffic based on universally unique identifiers (UUID) by using an access rule in ISA Server 2006
When you publish a back-end ISA Server 2006 computer on a front-end ISA Server 2006 computer that faces the Internet, you cannot enable forms-based authentication on both computers
The Microsoft Firewall service stops unexpectedly if a Web filter is used on a computer that is running ISA Server 2006
Requests that have large request bodies may fail when you publish a Web site in ISA Server 2006
Stop error message on a computer that has ISA Server 2006 installed: You receive a "Stop 0x0000007f"
ISA Server 2006 may forward requests to an incorrect Web server when a client computer accesses Web sites that have different public names in the same session
Some Web servers that are published in ISA Server 2006 by using the Web Publishing Load Balancing feature may be incorrectly detected as unavailable at random times
Error message when you try to change the password of a user account even if you configure ISA Server 2006 to allow users to change their passwords
HTTP SEARCH requests that do not have a SEARCH body may be sent to a Web server that is published in ISA Server 2006
A computer that is running ISA Server 2006 may randomly stop routing packets from certain VPN clients or from certain VPN site-to-site networks
Packets from the branch office may not reach the destination servers in the central office over a site-to-site VPN connection that you create through ISA Server 2006
When HTTP compression is enabled in Web publishing rules in ISA Server 2006, the compression filter may be unable to handle HTTP responses
A report may not display HTTPS traffic in ISA Server 2006
The Microsoft Firewall service crashes randomly when you use ISA Server 2006 to publish a Web server by enabling forms-based authentication
The Microsoft Firewall service in ISA Server 2006 stops responding to client requests after you publish a Web server by using NTLM authentication delegation
When you use ISA Server 2006 to publish a Web server, and authentication delegation is enabled, some Web content may not be displayed correctly when a user accesses the published Web server
Users cannot access a Web site that is published in ISA Server 2006 if the Web site accepts only the SPNEGO authentication package
Error message when you open a .gz file that you downloaded through an ISA Server 2004 Web proxy server: "Invalid archive directory"
You cannot log on to a local intranet site that you publish by using ISA Server 2006 when there are multiple user accounts that have the same account name in different domains
The report status appears as "Generating" and the report does not run when you click "Run now" in ISA Server 2006
A client computer may receive an error message when an ISA Server 2006 access rule limits access by content type: "HTTP 502 Proxy Error"
An ISA Server 2006 Web Proxy client receives error code 502 when a user tries to visit certain Web sites
Domain replication across ISA between Windows Server 2008 DCs fails
ISA Server 2006 Service Pack 1 introduces a new alert that is named "Client Authentication Time Exceeded"
ISA Server 2006 incorrectly returns an "HTTP 304 Not Modified" response to a proxy client
Error message when you try to copy a Web proxy log record to a clipboard in ISA Server 2004: "Error message 0x8007013d: ERROR_MR_MID_NOT_FOUND"