The IIS connector truncates headers larger than 8k bytes. This creates issues for a very small number of applications that use headers slightly larger than 8k. Both the IIS 5 and 6 connectors are affected. See TechNote 7fe403f8 for the JRun4 Updater 6 patch.
Note: ColdFusion MX 7.0.1 and MX 7.0.2 (Server or Multiserver editions) use JRun 4 Updater 5 and are affected by this patch.