Application Pool Recycle causes failure

Windows 2012 R2 Web Server
IIS 8.5
SharePoint 2010 SP2 November CU 2015


Everyday at 2:49 AM I get the following errors one in the system log and one in the application log

Log Name:      Application
Source:        ASP.NET 2.0.50727.0
Date:          11/13/2015 2:49:03 AM
Event ID:      1334
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      SERV013.FQDN.com
Description:
An unhandled exception occurred and the process was terminated.

Application ID: /LM/W3SVC/1068268973/ROOT

Process ID: 7540

Exception: System.Security.Cryptography.CryptographicException

Message: Keyset does not exist


StackTrace:    at System.Security.Cryptography.CryptographicException.ThrowCryptogaphicException(Int32 hr)
   at System.Security.Cryptography.SafeProvHandle._FreeCSP(IntPtr pProvCtx)
   at System.Security.Cryptography.SafeProvHandle.ReleaseHandle()
   at System.Runtime.InteropServices.SafeHandle.InternalFinalize()
   at System.Runtime.InteropServices.SafeHandle.Dispose(Boolean disposing)
   at System.Runtime.InteropServices.SafeHandle.Finalize()
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="ASP.NET 2.0.50727.0" />
    <EventID Qualifiers="49152">1334</EventID>
    <Level>2</Level>
    <Task>0</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2015-11-13T07:49:03.000000000Z" />
    <EventRecordID>90691</EventRecordID>
    <Channel>Application</Channel>
    <Computer>TGCS013.our.network.tgcsnet.com</Computer>
    <Security />
  </System>
  <EventData>
    <Data>An unhandled exception occurred and the process was terminated.

Application ID: /LM/W3SVC/1068268973/ROOT

Process ID: 7540

Exception: System.Security.Cryptography.CryptographicException

Message: Keyset does not exist


StackTrace:    at System.Security.Cryptography.CryptographicException.ThrowCryptogaphicException(Int32 hr)
   at System.Security.Cryptography.SafeProvHandle._FreeCSP(IntPtr pProvCtx)
   at System.Security.Cryptography.SafeProvHandle.ReleaseHandle()
   at System.Runtime.InteropServices.SafeHandle.InternalFinalize()
   at System.Runtime.InteropServices.SafeHandle.Dispose(Boolean disposing)
   at System.Runtime.InteropServices.SafeHandle.Finalize()</Data>
  </EventData>
</Event>



Log Name:      System
Source:        Microsoft-Windows-WAS
Date:          11/13/2015 2:49:04 AM
Event ID:      5009
Task Category: None
Level:         Warning
Keywords:      Classic
User:          N/A
Computer:      SERV013.FQDN.com
Description:
A process serving application pool 'SharePoint - Default App Pool' terminated unexpectedly. The process id was '7540'. The process exit code was '0xe0434f4d'.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-WAS" Guid="{524B5D04-133C-4A62-8362-64E8EDB9CE40}" EventSourceName="WAS" />
    <EventID Qualifiers="32768">5009</EventID>
    <Version>0</Version>
    <Level>3</Level>
    <Task>0</Task>
    <Opcode>0</Opcode>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2015-11-13T07:49:04.000000000Z" />
    <EventRecordID>74547</EventRecordID>
    <Correlation />
    <Execution ProcessID="0" ThreadID="0" />
    <Channel>System</Channel>
    <Computer>SERV013.FQDN.com</Computer>
    <Security />
  </System>
  <EventData>
    <Data Name="AppPoolID">SharePoint - Default App Pool</Data>
    <Data Name="ProcessID">7540</Data>
    <Data Name="ExitCode">e0434f4d</Data>
  </EventData>
</Event>

My research found these

From the Event ID 5009 ran err.exe   on 0xe0434f4d

C:\Util\Err>err 0xe0434f4d
# as an HRESULT: Severity: FAILURE (1), Facility: 0x43, Code 0x4f4d
# NOT FOUND: 0xe0434f4d

Do not understand what is NOT FOUND

This seems to be COM permissions?????????
Command prompt->dcomcnfg->component services->computers->right click on my computer->properties.
Go to COM security
Under launch and activation permissions
Add the SID S-1-5-82-3006700770-424185619-1745488364-794895919-4004696415 and provide local launch permissions.

then try and check if IISRESET still throws same error in event log.

I added spapppool account

No change

I spent many hours trying to figure out why everyday at 2:49 AM then by dumb luck I found it.

From within IIS I expanded the Application Pools list after scrolling thru each entry I found that

Application Pool SharePoint - Default App Pool is started  v2.0 Integrated identity mydom\spapppool

when I clicked on Recycling Settings  I see that it is set for Specific times at 2:49 AM


I also installed DebugDiag 2 Analysis and I have a dump  but I a, not sure what to look for


Any thoughts

Thanks in advance

Tom