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Hello I'm new to Xamarin, I'm trying to install the System.Net.Http to a Xamarin portable project using NuGet Package Manager. However, whenever I try to download it I get this error

Could not install package 'System.Net.Http 4.3.1'. You are trying to install this package into a project that targets '.NETPortable,Version=v4.5,Profile=Profile259', but the package does not contain any assembly references or content files that are compatible with that framework. For more information, contact the package author

I tried every possible version of the package with no use. Could anybody provide some assistance?

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3 Answers 3

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Actually the way I managed to solve this problem was weird I found a referenced assembly called

.NET --> right click View in object browser --> select System.Net.Http --> clicked add reference to the selected project

and the reference is added

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that is completely bizarre, txs for pointing it out. you add a reference the same way for 10 years and then all of a sudden this shows up.
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Have you tried to install Microsoft.Net.Http? I use it in my PCL Xamarin Forms apps.

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which profile are you targeting? Mine is PCL 4.5, Profile 78
@AlessandroCaliaro, what the diference between Microsoft.Net.Http and System.Net.Http. Can i to instance client object like system.net.http and to consume a restfull service?
I installed Microsoft.Net.Http and works fine. Solved!
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This can be resolved by changing the profile number for the PCL project. Personally, i would untick all the unneeded target frameworks by going to: Project Options -> Build - General - Change Targets.

In my case i have unticked Windows Phone silverlight 8 and the profile number got changed from PCL 4.5 Profile 259 to PCL 4.5 Profile 111 as shown in this screenshot:

Visual Studio 2017 For Mac

After doing so System.Net.Http can be added easily.

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