[LOG4NET-548] Dependency missmatch .net 4.0 and 4.5 for System.Security.Claims.ClaimsIdentity

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Won't Fix
• Affects Version/s: 2.0.7
• Component/s: Core
• Labels: claim identity xp
• Environment: Windows XP
• Assignee: Dominik Psenner
• Reporter: Joseph Piron
• Created: 16/Jan/17 16:49
• Updated: 16/Dec/17 11:01
• Resolved: 16/Dec/17 11:01

Description

I have a problem with a project using version 2.0.7 (from Nuget) compiled on a machine running windows 7 with VS2015 and .net 4.5, targeting framework 4.0 to get it to run on a windows xp machine:

I cannot use a RemoteSystlogAppender and when log4net debug is activated, I get this in the log:

log4net:ERROR [RemoteSyslogAppender] ErrorCode: WriteFailure. Unable to send logging event to remote syslog 172.27.48.80
 on port 514.
System.TypeLoadException: Could not load type 'System.Security.Claims.ClaimsIdentity' from assembly 'mscorlib, Version=4
.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.
   at log4net.Core.LoggingEvent.get_UserName()
   at log4net.Core.LoggingEvent.CreateCompositeProperties()
   at log4net.Core.LoggingEvent.LookupProperty(String key)
   at log4net.Layout.Pattern.PropertyPatternConverter.Convert(TextWriter writer, LoggingEvent loggingEvent)
   at log4net.Layout.Pattern.PatternLayoutConverter.Convert(TextWriter writer, Object state)
   at log4net.Util.PatternConverter.Format(TextWriter writer, Object state)
   at log4net.Layout.PatternLayout.Format(TextWriter writer, LoggingEvent loggingEvent)
   at log4net.Layout.LayoutSkeleton.Format(LoggingEvent loggingEvent)
   at log4net.Appender.RemoteSyslogAppender.Append(LoggingEvent loggingEvent).

After some googling, seems related to:
http://stackoverflow.com/questions/13748055/could-not-load-type-system-runtime-compilerservices-extensionattribute-from-as

Is log4net merged using ILMerge ? Could this be the cause ?