Set-ItemProperty IIS:\AppPools\[App_Pool] -Name Recycling.PeriodicRestart.Time has no effect in Server 2012 R2

Question

I've got a couple of farms of servers, one with Server 2008 R2 and one with Server 2012 R2 . After a bunch of searching, I found the following powershell to disable default IIS application pool recycling, which I run at an administrative powershell prompt:

Set-ItemProperty IIS:\AppPools\Test -Name Recycling.PeriodicRestart.Time -Value 0

This seems to work fine (it runs without any output on either platform), but when I subsequently attempt to query the value, on Server 2008 R2 , I get this:

PSPath                      : WebAdministration::\\SERVER1\AppPools\Test
PSParentPath                : WebAdministration::\\SERVER1\AppPools
PSChildName                 : Test
PSDrive                     : IIS
PSProvider                  : WebAdministration
IsInheritedFromDefaultValue : False
IsProtected                 : False
Name                        : time
TypeName                    : System.TimeSpan
Schema                      : Microsoft.IIs.PowerShell.Framework.ConfigurationAttributeSchema
Value                       : 00:00:00
IsExtended                  : False

but on Server 2012 R2 , I get this:

PSPath                      : WebAdministration::\\SERVER2\AppPools\Test
PSParentPath                : WebAdministration::\\SERVER2\AppPools
PSChildName                 : Test
PSDrive                     : IIS
PSProvider                  : WebAdministration
IsInheritedFromDefaultValue : True
IsProtected                 : False
Name                        : time
TypeName                    : System.TimeSpan
Schema                      : Microsoft.IIs.PowerShell.Framework.ConfigurationAttributeSchema
Value                       : 1.05:00:00
IsExtended                  : False

Notice that the Value in the first example is 00:00:00 , but in the second example is 1.05:00:00 . This is the default value inherited from the DefaultAppPool .

I've attempted to change the value for DefaultAppPool as well, but I get the same results--it works on 2008 R2 but not on 2012 R2 , so I'm fairly certain that inheritance isn't the issue.

Is there some alternate way to do this in Server 2012 R2 so that it doesn't ignore the command or better yet--a way to do it that works in both Server 2008 R2 and Server 2012 R2 ?

Answer 1

Ugh. After much frustration, it appears that Set-ItemProperty is case-sensitive , even though Get-ItemProperty is not. To all who find this, the solution is quite simple:

Set-ItemProperty -Path "IIS:\AppPools\Test" -Name recycling.periodicRestart.time -Value 00:00:00

(notice the lower-casing on the property name). To add insult to injury in Server 2012 R2 , Set-ItemProperty fails silently in the case (no pun intended) where the property name casing doesn't exactly match the proper XML element names in the underlying C:\\Windows\\System32\\inetsrv\\config\\applicationHost.config file.