When ISA Server Can’t Set Up NLB Parameters

ISA Server services use Windows Management Instrumentation (WMI) to control Network Load Balancing (NLB) parameters. It may happen that the compiled version of  NLB Managed Object Format  (MOF) files gets corrupted or incorrectly registered so that ISA Server is not able to control NLB anymore.   In this case:   ·         ISA Server is going…


Windows services may fail to start after installing ISA Server 2004 Service Pack 3

In the following scenario, the Windows operating system may not run correctly after installing ISA Server 2004 Service Pack 3: 1.       ISA Server 2004 is installed on a computer which is a member of an Active Directory domain. 2.       The Enteprise Admins group (which exists by default on the Active Directory root domain)  has been…


Windows services may fail to start after installing ISA Server 2006 Supportability Pack (KB 939455)

In the following scenario, the Windows operating system may not run correctly after installing ISA Server 2006 Supportability Pack: 1.       ISA Server 2006 is installed on a computer which is a member of an Active Directory domain. 2.       The Enteprise Admins group (which exists by default on the Active Directory root domain)  has been assigned…


Missing status in logging details panes

If you’ve installed ISA 2004 SP3 or the recently-released ISA 2006 Supportability Update, you may have noticed missing status codes: As you may guess from the Filter information field, the status should say “12217 The request was rejected by the HTTP filter. Contact your ISA Server administrator.” This happens when you’re looking at logs on…


Questionable users

You may have noticed that in certain cases, the Client Username field in the ISA firewall log has user names with question marks – (?) – after them:  Who are these questionable users? These user names appear when you have a policy rule which allows All Users, and a Firewall Client (FWC) computer passes through…