Visual Studio System.OutOfMemoryException

I have strange problem.

In some moment when i tried to run my c# asp.net web pages app my visual studio has been crashed with message System.OutOfMemoryException. I tried to place breakpoints , but it happens before running of the app. I tried to open another asp.net mvc project and have same problem.

Visual Studio Comunity 2017 15.8.1, Intel Core i5, 8gb Ram - only 53% is used.
First project is asp.net web pages Net.4.5, second is Asp.net MVC .Net.4.6.

Please help to understand where is problem:

Stack Trace:

System.OutOfMemoryException
[OutOfMemoryException:  "System.OutOfMemoryException".]
   System.Web.Compilation.MultiTargetingUtil.InitializeKnownAndLatestFrameworkNames() +0
   System.Web.Compilation.MultiTargetingUtil.EnsureFrameworkNamesInitialized() +144
   System.Web.Compilation.BuildManager.Initialize() +347
   System.Web.Compilation.BuildManager.InitializeBuildManager() +323
   System.Web.HttpRuntime.HostingInit(HostingEnvironmentFlags hostingFlags, PolicyLevel policyLevel, Exception appDomainCreationException) +662

[HttpException (0x80004005): "System.OutOfMemoryException".]
   System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +523
   System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +107
   System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +688