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I installed VS 2013 with Update 3 on disk E. By using a software, I merged disk D and E to one partition. And the data was lost.

But, i restarted my pc, i could still uninstalled some software. VS 2013 is not one of them.

VS said that it needs a source to complete. I can't provide it. Nothing in disk E, it includes VS 2013 source.

After that. I linked to and download new version. It's VS 2013 with Update 4. I downloaded iso file, and burned to my usb.

When running as administrator, it shows me 1 error and many warning. Like this:

The form specified for the subject is not one supported or known by the specified trust provider.

The installer was stopped.

I had referenced many relate, some ideas are:

-- Uninstall VS 2013 Update 3. Restart and try to install VS Update 4. I can't do this.

-- Read this link: Visual Studio 2013 Setup: common issues and workarounds. I read and... still didn't see any solution to solve my trouble. The installer didn't tell me "Why" or give me any error code about the problem.

So, my problem is:

I have VS 2013 with Update 3 on my system, and the source was lost. I can't uninstall it. I want to install new VS 2013 with Update 4 within Update 3. But I don't know how to do that.

Can you give me any solution?

Thanks so much!
Richard MacCutchan 16-Nov-14 8:13am    
From the description above your PC is in something of an unstable state. You need to ensure that all references to Visual Studio 2013 are removed. This means automatic removal by Control Panel -> Programs and Features, or manual removal by editing the Registry.
user8x86 16-Nov-14 8:27am    
I had tried. But, VS needs the source to complete uninstalling.
Richard MacCutchan 16-Nov-14 8:32am    
Then you will have to try option 2, or contact Microsoft support.

1 solution[^][^]
First try the /force command line options and only if it does not help try the registry cleaning options (backup is advised)...
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