Category Archives: PowerShell

Powershell: Using the whenCreated attribute in LDAP Filters

It is sometimes helpful to be able to search for objects in AD by their creation date.  The whenCreated attribute is useful for this as it is a replicated attribute (i.e. is consistent across all DCs).  The challenge for using whenCreated in LDAP filters is the syntax.  The attribute uses the GeneralizedTime syntax to represent… Read More: Powershell: Using the whenCreated attribute in LDAP Filters »

Powershell script to import message classifications

If you are in a cross-forest mailbox migration scenario and use Exchange message classifications, this script might be useful to you.  If you plan to have the same message classifications in the target Exchange Organisation then you will want the classification IDs to match.  Without this, there is potential for the classification on migrated mail… Read More: Powershell script to import message classifications »

Powershell script to check for duplicate attribute values

Here’s a handy Powershell script to check for duplicate attribute values on AD objects.  Why is this useful?  Well, you might have provisioning systems that assign unique values (e.g. employeeID) to AD objects.  Things can start to go wrong if it turns out that more than one object has been assigned the same attribute value. … Read More: Powershell script to check for duplicate attribute values »

Powershell script to find objects using objectGUID value

The objectGUID attribute is a little tricky to work with, especially if you want to use it as part of an LDAP filter.  This is because the value in stored within the directory as an octet string – essentially an array of one-byte characters.  This syntax is not especially user-friendly, which is why it is… Read More: Powershell script to find objects using objectGUID value »