Unhandled Excepton updating multiple applicationPools

[fjOngoing]

IIS.Administration does not handle multiple updates.
Because IIS configuration is all saved to a file only 1 update at a time can open and edit the file.

2 API calls that changes that file causes an unhandled exception
An unhandled exception has occurred while executing the request.

Exception:
System.IO.FileLoadException: Filename: \?...\inetsrv\config\applicationHost.config
Error: Cannot commit configuration changes because the file has changed on disk

at Microsoft.Web.Administration.Interop.IAppHostWritableAdminManager.CommitChanges()
at Microsoft.Web.Administration.ConfigurationManager.CommitChanges()
at Microsoft.Web.Administration.ServerManager.CommitChanges()
at Microsoft.IIS.Administration.WebServer.MgmtUnit.Commit()
at Microsoft.IIS.Administration.WebServer.AppPools.AppPoolsController.Patch(String id, Object model)
at lambda_method115(Closure , Object )
at Microsoft.AspNetCore.Mvc.Infrastructure.ActionMethodExecutor.AwaitableObjectResultExecutor.Execute(IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller, Object[] arguments)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.g__Awaited|12_0(ControllerActionInvoker invoker, ValueTask`1 actionResultValueTask)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.g__Awaited|10_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Rethrow(ActionExecutedContextSealed context)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.g__Awaited|13_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.g__Awaited|25_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Rethrow(ResourceExecutedContextSealed context)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.g__Awaited|20_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope)
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope)
at Microsoft.AspNetCore.Builder.RouterMiddleware.Invoke(HttpContext httpContext)
at Microsoft.IIS.Administration.WebServer.Injector.ProceedNoTransaction(HttpContext context)
at Microsoft.IIS.Administration.WebServer.Injector.Invoke(HttpContext context)
at Microsoft.IIS.Administration.HeadTransform.Invoke(HttpContext context)
at Microsoft.IIS.Administration.Startup.<>c.<b__4_0>d.MoveNext()
--- End of stack trace from previous location ---
at Microsoft.IIS.Administration.Security.Authorization.AuthorizationPolicyMiddleware.Invoke(HttpContext context, IAuthorizationService authorizationService)
at Microsoft.IIS.Administration.Cors.CorsExtensions.<>c.<b__0_2>d.MoveNext()
--- End of stack trace from previous location ---
at Microsoft.IIS.Administration.Cors.CorsExtensions.<>c__DisplayClass0_0.<b__0>d.MoveNext()
--- End of stack trace from previous location ---
at Microsoft.IIS.Administration.ErrorHandler.Invoke(HttpContext context)
at Microsoft.IIS.Administration.ErrorHandler.Invoke(HttpContext context)
at Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware.g__Awaited|6_0(ExceptionHandlerMiddleware middleware, HttpContext context, Task task)