ITExperience.NET

When trying to login to an HP swtich, the following error occurred:

Exception encountered during initialization: com:broace.web.secsan.SecureSANException: Cannot load RBACMatrix from switch: The user is not authenticated. Invalid session

After some troubleshooting in Exchange 2007, my eventlog was flooded by the following event:

Event Type: Warning
Event Source: MSExchangeIS Mailbox Store
Event Category: Access Control
Event ID: 1029
Date:  7/25/2008
Time:  10:57:21 AM
User:  N/A
Computer: %servername%
Description:
%emailaddress% failed an operation because the user did not have the following access rights:

When you try to run a Powershell script (PS1), you may get the following error:

File xyz.ps1 cannot be loaded because the execution of scripts is disabled on this system. Please see “get-help about_signing” for more details. At line:1 char:2

After an upgrade from Exchange 2003 to Exchange 2007, you should immediately uninstall the Exchange System Manager (ESM) on any desktop in your organisation. This is because the ESM enriches your Active Directory Users And Computers with some Integrated Exchange Tabs. These tabs, that come with ESM 2003, do not work with Exchange 2007. And if they do work, you should not use them :)

Due to some reconfiguration, I turned off a domain controller. Everything seemed to be working fine, until a few people complained about authentication errors on a Java-environment. Because I wanted to fix this problem quickly, I edited my DNS-record in Active Directory: I pointed my turned-off server (DC2) to the IP-address of a running DC (DC1). This seemed to be working, until a few people faced an error on the logon script: “Logon failure: the target account name is incorrect“.