Significant delays in processing commands to block or unblock email access for devices managed by Microsoft Intune after upgrading to SCCM 2012 R2 SP1

Significant delays in processing commands to block or unblock email access for devices managed by Microsoft Intune after upgrading to ConfigMgr 2012 R2 SP1

I’ve upgraded my environment to ConfigMgr 2012 R2 SP1 but now it seems to take ages to process commands to block or unblock email access for devices managed by Microsoft Intune.

If I look in the dmpdownloader.log I see:

ERROR: Failed to load assembly for message downloader. Exception: System.IO.DirectoryNotFoundException: Could not find a part of the path ‘I:\Program%20Files\Microsoft%20Configuration%20Manager\bin\x64\MessageHandlerConfig.xml’.~~ 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, Boolean checkHost)~~ 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, Int32 bufferSize)~~ at System.Xml.XmlUrlResolver.GetEntity(Uri absoluteUri, String role, Type ofObjectToReturn)~~ at System.Xml.XmlTextReaderImpl.OpenUrlDelegate(Object xmlResolver)~~ at System.Threading.CompressedStack.runTryCode(Object userData)~~ at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)~~ at System.Threading.CompressedStack.Run(CompressedStack compressedStack, ContextCallback callback, Object state)~~ at System.Xml.XmlTextReaderImpl.OpenUrl()~~ at System.Xml.XmlTextReaderImpl.Read()~~ at System.Xml.XmlLoader.Load(XmlDocument doc, XmlReader reader, Boolean preserveWhitespace)~~ at System.Xml.XmlDocument.Load(XmlReader reader)~~ at System.Xml.XmlDocument.Load(String filename)~~ at Microsoft.ConfigurationManager.DmpConnector.MessageDownload.MessageDownloader.LoadMessageHandlers()