Pool.Recycle() throwing exception from HRESULT: 0x80070005 (E_ACCESSDENIED)

Question

I want to Recycle application pool programmatically after some interval of time. I tried it using 2 methods that are specified below.

1)
    public static void RecycleAppPools()
    {
        ServerManager serverManager = new ServerManager();
        ApplicationPoolCollection appPools = serverManager.ApplicationPools;
        foreach (ApplicationPool ap in appPools)
        {
            //if(ap.Name== System.Security.Principal.WindowsIdentity.GetCurrent().Name)
            ap.Recycle();
        }
    }

The above is throwing exception of "Access denied"

  2) private static void RecycleApplicationPool(string appPoolId)
    {
        string appPoolPath = "IIS://localhost/W3SVC/AppPools/" + appPoolId;

        var appPool = new DirectoryEntry(appPoolPath);

      //  DirectoryEntry appPoolEntry = new DirectoryEntry(appPoolPath);

        appPool.Invoke("Recycle", null);
    }

This above method is throwing exception "System.Runtime.InteropServices.COMException: Unknown error (0x80005000)". Nothing is working for me.

I have given reference to Microsoft.Web.Administration and working on Visual studio 2015 express with framework 4.6.1 and IIS version is 10.0.14393.0

Please help if anyone can. Thanks in advance.

Can you please post for what scenario you want to recycle apppool? — programtreasures, Dec 27 '17 at 06:17
Did you check this? https://stackoverflow.com/questions/249927/restarting-recycling-an-application-pool. You might have to run the code in Admin mode. — Souvik Ghosh, Dec 27 '17 at 06:19
@SouvikGhosh Yes i tried the link but still getting exception on "applicationPool.Recycle();" and exception that is thrown says "Exception from HRESULT: 0x80070005 (E_ACCESSDENIED)" — Priyanka Bansal, Dec 27 '17 at 06:49
@programtreasures I really dont know the scenario but this is my requirement from client. and we dont have access to IIS so we can do that only in programatic way. — Priyanka Bansal, Dec 27 '17 at 06:53
@priyanka are you testing on client machine or on local machine? — programtreasures, Dec 27 '17 at 07:05
@programtreasures am testing on my local machine by creating an sample application — Priyanka Bansal, Dec 27 '17 at 07:11

Remus Rusanu · Answer 1 · 2017-12-27T10:15:17.663

2

You app, running in the pool, does not have the permission to recycle the app pool. The error is very clear and explicit. The permission is granted to members of the Administrator group.

The solution is to not recycle the app pool from the app pool. The whole idea of recycling the app pool on demand is bonkers. You should use app pool <recycle> settings to trigger this. If you insist use a scheduled task that runs as Admin.

Do not change the app to run as Admin.

Edit: The delegate solution @Zaitsman shows is also good

edited Dec 27 '17 at 10:15

answered Dec 27 '17 at 08:11

Remus Rusanu

288,378
40
442
569

You can also delegate these permissions apparently: https://blogs.msdn.microsoft.com/asiatech/2011/07/20/iis-7-delegate-remote-application-pool-recycling-for-non-administrator/ – zaitsman Dec 27 '17 at 08:40
@RemusRusanu I tried the code that adds an element to schedule recycling after some interval of time. I did that code on button click. It recycle pool for first click but when i refresh my page after that time interval it does not destroy any session that means pool did not get recycled. Please tell me where I am wrong. – Priyanka Bansal Dec 27 '17 at 10:06

zaitsman · Answer 2 · 2018-01-02T09:49:49.187

As @RemusRusanu pointed out, in general this is not a good idea (think an attacker running code inside your app pool could do a whole new level of DDoS inside your box).

However, you may be able to do this if you delegate the user running your app pool with permissions as per this article: https://blogs.msdn.microsoft.com/asiatech/2011/07/20/iis-7-delegate-remote-application-pool-recycling-for-non-administrator/

Pool.Recycle() throwing exception from HRESULT: 0x80070005 (E_ACCESSDENIED)

2 Answers2