Visual Studio 2015 RC Community will not install, says it is already installed

Question

As the title implies, I am not able to install Visual Studio 2015 RC Community, and I keep getting the following errors. For the record, I am on Windows 8.1 Professional.

Answer 1

I banged my head over uninstalling 2015 RC for hours. I found quite a few discussions about uninstalling RC but nothing worked.

I used variations of vs_*.exe /uninstall /force but nothing worked.

I do not remember, but I think I must have performed an "online" install of RC and found a file with the same filedate as the install date.

The following worked for me: vns_full.exe /uninstall /force

Thanks to all the people in all the forums that eventually helped me find a solution to this uninstall RC problem.

Answer 2

I have the same issue then installing update1 to the visual studio 2015 community.

install error, link to the image and text:

Visual Studio Professional 2015 is currently installed on this machine. Please uninstall Visual Studio Professional 2015 and retry.

In past i installed plugin Visual Studio 2015 Installer Projects that didn't work with VS 2015 community and work with VS 2015 profession.

This recipe was:

1) Launch RegEdit

2) if win32: Select key "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\DevDiv\vs\Servicing\14.0" if win64: Select key "HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\DevDiv\vs\Servicing\14.0"

3) In that key/subkey, you must create two new subkeys: "professional" "vscore"

4) In each of the subkeys you have just created create a REGSZ value (=string) with the name "Install" and value "1" (yes: "1" is a string!)

Now to address the problem in VS 2015 community had to rename or delete a folder in the registry "professional"

Before community folder, picture

Before professional folder, picture

vscore

After professional folder, picture

Answer 3

I followed the steps from MSDN Forum to uninstall the VS2015 Ultimate and VS2015 Preview by running the command

D:\vs_ultimate.exe /uninstall /force

(replace D with the VS2015 DVD or mounted ISO drive letter)

The forum says for VS2013 but same method will work for uninstalling any edition.

Answer 4

After updating the anti-virus (McAfee), I successfully installed it.

Answer 5

I solved this issue by more or less following this post. I previous installed VS 2015 on my partition which I accidentally formatted without uninstalling and was giving me the same error.

So I had to manually hand delete many references in both the 32 and 64 bit registry.

Answer 6

Found this tool that forcefully uninstalls everything related to Visual Studio 2013 and 2015. It did the trick for me.

VisualStudioUninstaller