From the original umbraco 4.5.2 download web.config:

    <!--
        Set this to true to enable storing the xml cache locally to the IIS server even if the app files are stored centrally on a SAN/NAS
        Alex Norcliffe 2010 02 for 4.1-->
    <add key="umbracoContentXMLUseLocalTemp" value="false"/>

Edit:
Lol, sorry, that's another config key :P

Where did you find that? I don't have this setting in either 4.0.x nor 4.5.x

My mistake it was umbracoContentXMLUseLocalTemp :p.

I've also read that comment from Alex Norcliffe, but we currently run into this exception if it's set to true:

Xml wasn't saved:
System.UnauthorizedAccessException: Access to the path
'C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET
Files\root\f5a63f25\baceda27\UmbracoData\umbraco.config' is
denied.     at System.IO.__Error.WinIOError(Int32 errorCode,
String maybeFullPath)     at
System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32
rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions
options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy,
Boolean useLongPath)     at
System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access,
FileShare share, Int32 bufferSize, FileOptions options, String msgPath, Boolean
bFromProxy)     at System.IO.FileStream..ctor(String path,
FileMode mode, FileAccess access, FileShare share)     at
System.Xml.XmlDocument.Save(String filename)     at
umbraco.content.PersistXmlToFile(XmlDocument xmlDoc)

Is this related?

Jeroen

Yes it is. When set to true it will use the Temporary ASP.NET folder.

Why do you want to enable this?

Looks like you IIS_IUSRS group might not have enough permissions in the temp folder. Should have modify rights.

Hi,

I'n looking into the same problem as Jeroen Breuer and i have had a look at te security rights in the "Temporary ASP.NET
Files" folders. (these have been automaticly set by the framework itself).

IIS_IUSRS have modify rights

and the windows users running the application pool even has full control in this folder

a strange thing is that

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET
Files\root\f5a63f25\baceda27\UmbracoData\umbraco.config'

is a folder ... where i should expect it to be a file. Could this have anything to do with our problem ?

Tom

Related topic, showing the code relating to this setting: http://our.umbraco.org/forum/core/general/10537-No-write-permissions,-but-a-staging-server

@Tom, if 'umbraco.config' is a folder and not a file, that will be the issue. How this would have happened is a mystery to me.

I have also had occasional problems with Umbraco temp files in the Temporary ASP.NET folders.  For me deleting the temp files and doing an IIS Reset resolves it.

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