After successfully upgrading an existing BTS2010 and SSO installation to BTS2013 we found a custom pipeline component failing with the following error in the event log after some initial testing.
After reviewing the component source code, a reference to the Microsoft.BizTalk.Interop.SSOClient v126.96.36.199 assembly was found. Instead of recompiling the the solution using VS2012 and having to redeploying, I decided to redirect the assembly version in the BizTalk config files BTSNTSvc.exe.config and BTSNTSvc64.exe.config.
Below is the assembly binding information that was placed between the existing <runtime> tags.
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1" appliesTo="v4.0.30319">