Error CS1705: "which has a higher version than referenced assembly"

I've been looking into this for a bit now and haven't gotten it resolved. I get the following error message:

Compiler Error Message: CS1705: Assembly 'My.Model, Version=1.1.4422.23773, Culture=neutral, 
PublicKeyToken=bfde95ba233094b2' uses 
'Common, Version=3.3.4273.24368, Culture=neutral, PublicKeyToken=bfde95ba233094b2' 
which has a higher version than referenced assembly
'Common, Version=3.3.4269.17112, Culture=neutral, PublicKeyToken=bfde95ba233094b2'

c:\WINDOWS\assembly\GAC_MSIL\Common\3.3.4269.17112__bfde95ba233094b2\Common.dll: 
(Location of symbol related to previous error)

The web server is running Server 2003. I went to c:\windows\assembly and did in fact notice that there were 3 versions of Common.dll listed. The highest version listed was 3.3.4269.17112

I copied the dll with version: 3.3.4273.24368 into the assembly directory. I then re-compiled and re-deployed my code (probably overkill but oh well). When I opened my browser in a new session and went to the site URL again I still got the same message.

I can use windows explorer and verify the higher-versioned Common.dll is now listed as well.

What more can I look into to resolve this issue? I don't want to change the reference in my assembly to point to the older version.

Solution 1:

I had this error because "Rebuild" was not really rebuilding.

Solution: Close Visual Studio, really go and delete the bin folder, then rebuild, it might work better.

Also, sometimes Visual Studio lies about references, so check the HintPathin your .csproj files.

Solution 2:

If you're using NuGet it is worth going to 'Manage NuGet Packages For Solution', finding the package which is causing issues and hitting update. It should then bring all of the packages up to the latest version and resolve the problem.

Worth a shot as it's a quick and easy.