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PRB: System.Runtime.Remoting, or dependencies not found Question I am trying to run samples downloaded from the web or taken from an older book. or I'm currently running code that worked fine in previous versions of the Framework SDK. Unfortunately, I get the following error message: An unhandled exception of type 'System.Runtime.Remoting.RemotingException' occurred in mscorlib.dll Additional information: Remoting configuration failed with the exception System.IO.FileNotFoundException: File or assembly name System.Runtime.Remoting, or one of its dependencies, was not found. File name: "System.Runtime.Remoting" at System.Reflection.Assembly.nLoad(AssemblyName fileName, String codeBase, Boolean isStringized, Evidence assemblySecurity, Boolean throwOnFileNotFound, Assembly locationHint, StackCrawlMark& stackMark) at System.Reflection.Assembly.InternalLoad(AssemblyName assemblyRef, Boolean stringized, Evidence assemblySecurity, StackCrawlMark& stackMark) at System.Reflection.Assembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark) at System.Reflection.Assembly.Load(String assemblyString) at System.Runtime.Remoting.RemotingConfigInfo.LoadType(String typeName, String assemblyName) at System.Runtime.Remoting.RemotingConfigHandler.CreateChannelFromConfigEntry(ChannelEntry entry) at System.Runtime.Remoting.RemotingConfigHandler.ConfigureChannels(RemotingXmlConfigFileData configData) at System.Runtime.Remoting.RemotingConfigHandler.ConfigureRemoting(RemotingXmlConfigFileData configData) Answer In this case, you're specifying a channel like this in your configuration file (this worked in beta 2): <channel type="System.Runtime.Remoting.Channels.Http.HttpChannel, System.Runtime.Remoting"> Instead you should either use the "ref"-syntax and specify it as <channel ref="http"> or you have to specify the complete strong name of the target assembly if it's in the GAC (f.e. for all "standard" .NET Framework DLLs): <channel type="System.Runtime.Remoting.Channels.Http.HttpChannel, System.Runtime.Remoting, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"> The following channel refs are predefined: "http" "http client" "http server" "tcp" "tcp client" "tcp server" and the following formatter refs: "soap" "binary"