Posted on: 11/9/2014 11:45:05 PM | Views : 389

Hi, we have around 15 .NET 2.0 and .NET 3.5 applications and I've created a new .NET 4.0 app.
I would like to put this with the others on our new web server however when deploying I get an error about duplicate entries in the web.config.
I think it specifically relates to tags like System.Web.Extensions and clashes with the machine.config on the server.
If I remove these tags then I'm sure the error will go away. My question is...what's the best approach here?
Surely removing these tags every time I deploy is not the solution. Should I upgrade all the applications to .NET 4.0? If so, what then? Would I simply remove the duplicate entries from the machine.config rather than the web.config for each deployment?
Can somebody please advise on the best solution moving forward for this problem? Thank you!

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