Edit

Troubleshooting BizTalk Server Migration

  • Article

This section provides a centralized location for information about common problems encountered while migrating BizTalk applications from BizTalk Server 2006 R2 or BizTalk Server 2009 to BizTalk Server.

Known Issues

Custom applications might not work while upgrading

Problem

While upgrading from BizTalk Server 2006 R2 or BizTalk Server 2009 to BizTalk Server, some custom applications might not work.

Cause

All the BizTalk managed code components run on CLR 4.0. As these components are compiled against .NET Framework 4.5, they need a config file to run in CLR 4.0.

Solution

To resolve this issue, update the config file.

<configuration>  
<startup useLegacyV2RuntimeActivationPolicy="true">  
<supportedRuntime version="v4.0" />  
</startup>  
</configuration>

See Also

Troubleshooting