Error: unhandled error in silverlight application code: 2152 category: initializeerror message: failed to download a platform extension: microsoft.csharp.zip

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I am using Visual Studio 2015 with MS .NET Framework Version 4.7. My project working fine and I am trying to find something in the project but suddenly it started giving the above error. Although I have not changed anything in it. If something has been changed mistakenly then I am not sure.
Anyone has idea why this error is coming. I have backup copy of the same project that works fine.
I want the version which is creating error as it is updated one.

What I have tried:

I have checked references. I also have googled but i cannot find anything as another copy of the same projects is working fine so no need of changing anything in it.

Posted 27-Jan-19 23:37pm

muryali09

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Richard Deeming 28-Jan-19 7:39am

NB: Silverlight is dead. Support will cease completely in less than two years (October 2021). It hasn't been supported in Chrome since 2015. It hasn't been supported in Firefox since 2017. It has never been supported in MS Edge. It hasn't been supported in IE7/8 since 2016. IE9-11 is the only place it still works.

Microsoft Silverlight : Demise - Wikipedia[^]

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