In the last blogg I wrote in how to find differens in source and target folder inheritance. Here is a scritpt to enable the inheritance on multiple folders listed in an csv-file. The acl.SetAccessruleProtection line only sets the flag and the you have to commit with set-acl, hopefully this will change in future versions.
Had to use google on this one because the strange way to implement this. http://richardspowershellblog.wordpress.com/2008/02/06/file-system-allow-inheritable-permissions-from-parent-to-propagate/
#---------------- --------------------------------------------- #NAME: Set folder inheritance.ps1 #AUTHOR: Viktor Lindström # #COMMENTS: Set inheritance behavior on folders #------------------------------------------------------------- $Import = import-csv "c:\test\folders.csv foreach ($path in $import) { $acl= Get-Acl -Path $path $acl.AreAccessRulesProtected $isProtected = $false $preserveInheritance = $true $acl.SetAccessRuleProtection($isProtected, $preserveInheritance) Set-Acl -Path $path -AclObject $acl }