Tuesday, November 8, 2016

Insufficient Winsock Resources Available to Complete Socket Connection Initiation

Seemingly out of the blue, one of our customers could no longer log in to their CRM. As it appeared to be an authentication issue, I began troubleshooting on their ADFS server. Upon opening the ADFS Management Console, I was greeted with the following error message:

In the event viewer were a number of errors similar to this:

Microsoft.IdentityServer.Configuration.ReadServiceConfigFailedException: MSIS2001: Configuration service URL is not configured. ---> System.InsufficientMemoryException: Insufficient winsock resources available to complete socket connection initiation. ---> System.Net.Sockets.SocketException: An operation on a socket could not be performed because the system lacked sufficient buffer space or because a queue was full

Well, this was a new one for me but at least the error message actually gave a description instead of something generic. Logic dictates that if there isn’t enough of something, give it more. In this case, it appeared to me that ADFS was complaining about not having enough ephemeral ports so I figured I would increase the number available.

  1. Start Registry Editor.
  2. Locate the following subkey in the registry, and then click Parameters:  HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
  3. On the Edit menu, click New, and then add the following registry entry:
    Value Type: DWORD
    Value Name: MaxUserPort
    Value Data: 65534 (decimal)
  4. Reboot server
After completing the above, ADFS was able to open the connection to its database and users were able to log back in to CRM. Now, it may be worthwhile to investigate exactly why ports suddenly became busy… perhaps there is a socket leak or new applications were installed… but this should at least get you up and running in the meantime.

Thursday, November 3, 2016

Calling LoadLibraryEx on ISAPI filter DefaultAddonFilter.dll failed

I recently had an interesting issue with a client’s CRM 2011 to 2016 go-live. Following all of my upgrade work and initial testing, I typically like to reboot the CRM and SQL servers and then test again. In this particular instance, when the servers came back online I tested CRM again only to receive a lovely error message from Internet Explorer:

HTTP Error 500.0 – Internal Server Error

Calling LoadLibraryEx on ISAPI filter C:\Program Files\Microsoft Dynamics CRM\Server\bin\DefaultAddonFilter.dll failed.

After a fair amount of digging I noticed that the Visual C++ 2013 Redistributable (64-bit) was not present in the add/remove programs list on the CRM server. It seemingly uninstalled itself during the reboot because otherwise I would have had this issue pre-reboot. So, I went out and grabbed the installer package for Visual C++ 2013 Redistributable (64-bit) from MS (http://go.microsoft.com/fwlink/p/?LinkId=402059) and reinstalled it. After that and an IISReset, CRM began functioning as normal and everything retested everything successfully.

Unfortunately, I am at a loss as to why this happened – perhaps something to do with server patching. Also of note is that the redistributable did not remove itself from the SQL server.