Lesson of the day : .NET 1.1, 2.0 and 64 bits

Today at work we had an issue with a web app that does a call to a DB. That error was : invalid cast.

After searching to know what was going on and not without frustration I noticed that the application migrated was built on the 1.1 .Net framework. Unfortunately, the new server only have the 2.0 version. Not that big of a deal since 1.1 and 2.0 framework can co-exist side by side. But there is an IF, that if being that if the 2.0 framework run in 64 bits mode, 1.1 can not run side by side unless you run 2.0 in 32 bits…

I guess the dev will need to some little coding… 🙂

P.S : I know 1.1 support 64 bits environments, but like I said, it can’t run with 2.0 in 64 bits mode…


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