Site restart after removing folders from physical path. on IIS 10

We have functionality on asp.net 4.7 site which remove folder with static data (css, js) and generate same folder with updated (js,css) files. After folder removing with static data, site restarts. I get this error log :

ApplicationEnd: ShutDownMessage: Directory rename change notification for 'D:\Projects\MySite\src\WebProject'.
WebProject dir change or directory rename
HostingEnvironment initiated shutdown
Directory rename change notification for 'D:\Projects\MySite\src\WebProject'.
WebProject dir change or directory rename
Directory rename change notification for 'D:\Projects\MySite\src\WebProject'.
WebProject dir change or directory rename
HostingEnvironment caused shutdown 
 ShutDownStack:    at System.Environment.GetStackTrace(Exception e, Boolean needFileInfo)
   at System.Environment.get_StackTrace()
   at System.Web.Hosting.HostingEnvironment.InitiateShutdownInternal()
   at System.Web.Hosting.HostingEnvironment.InitiateShutdownWithoutDemand()
   at System.Web.HttpRuntime.ShutdownAppDomain(String stackTrace)
   at System.Web.HttpRuntime.OnCriticalDirectoryChange(Object sender, FileChangeEvent e)
   at System.Web.FileChangesMonitor.OnSubdirChange(Object sender, FileChangeEvent e)
   at System.Web.DirectoryMonitor.FireNotifications()
   at System.Web.Util.WorkItem.CallCallbackWithAssert(WorkItemCallback callback)
   at System.Web.Util.WorkItem.OnQueueUserWorkItemCompletion(Object state)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
   at System.Threading.ThreadPoolWorkQueue.Dispatch()

There are some settings in IIS (APPPool/site) that would not create a restart at the site after deleting this folder.

PS. I already investigate solution with fcnMode="Single" on web.config. This is not a solution for us.

<httpRuntime executionTimeout="180" targetFramework="4.7.2" requestValidationMode="2.0" maxRequestLength="104857600" fcnMode="Single"/>

Solution

This is a normal behavior of IIS.

IIS will restart application or recycle application pool in following cases: the web.config is edited

the machine.config is edited
the global.asax is edited
files are changed in the bin directory of the web app, or one of the bin’s subdirectories
a directory is created, renamed, or deleted within a web app directory
an ASP.NET file (aspx, asmx, etc.) is edited (and therefore recompiled) more than 20 times, a default set in the machine config as an element named numRecompilesBeforeApprestart
by way of settings of various attributes in the element in the machine.config, which affect the restart/shutdown of the worker process itself.

You cannot stop this behavior because it is by designed. Unless you stop removing folder.