The tools version "14.0" is unrecognized. Available tools versions are "2.0", "3.5", "4.0".

Hi,
when saving a solution with one project in in I am getting this error:(I have VS studio 2017 and 2019 insyalled on the computer). It is working on a clean machine that don't have VS studio.
"The tools version "14.0" is unrecognized. Available tools versions are "2.0", "3.5", "4.0". "
Solution and project content:
Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio 15
VisualStudioVersion = 16.0.30204.135
MinimumVisualStudioVersion = 10.0.40219.1

Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "hhhytyh", "hhhytyh\hhhytyh.csproj", "{79202C45-3535-4911-BA2B-9839CEAF1AE8}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU
Release|Any CPU = Release|Any CPU
EndGlobalSection
GlobalSection(ProjectConfigurationPlatforms) = postSolution
{1}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{1}.Debug|Any CPU.Build.0 = Debug|Any CPU
{1}.Release|Any CPU.ActiveCfg = Release|Any CPU
{1}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
EndGlobalSection
GlobalSection(ExtensibilityGlobals) = postSolution
SolutionGuid = {425E64AC-E8A0-4BB1-A0A9-A2C90F771B02}
EndGlobalSection
EndGlobal

Project
Hi,
It looks like the conflicts are caused by multiple Visual Studios being installed. We've seen this issue couple of times after installing latest Visual Studio updates).
Could yo please try installing Microsoft Build Tools for Visual Studio 2015 from here to see if it fixes the problem?
https://www.microsoft.com/en-us/download/details.aspx?id=48159
Regards,
Andrew
Thanks. Yes I have both VS 17/19 installed. Installing the 2015 build tools fixed the issue.