Sharepoint 2010 Workflow Intermittently shows Error Occurred

Sharepoint 2010 Workflow Intermittently shows Error Occurred

Using and InfoPath form, a person will submit a request to a form library.
Upon creation of new item in the library, the workflow (using SharePoint
Designer out of the box functionality - no code) is set to automatically
start. It's a fairly simple workflow with 3 approval steps. 75% of the
time it runs perfectly fine, 25% of the time it will switch to 'Error
Occurred'. It particularly seems to error more often in the morning hours,
although not limited to that time of day. I've read just about every
article out there and have not found a solution.
-Workflow history screen will show 'Note: Due to heavy load, the latest
workflow operation has been queued. It will attempt to resume at a later
time', until it finals errors.
-Have already increased workflow throttle and batch size, issue seems to
of gotten worse since then
-Workflow history will says 'An error has occurred in [workflow name]' by
the system account.
-There appear to be no batch jobs running at the same time, no heavy work
like backups occurring
-This is occurring on more than one workflow for more than one form
library, they are all completely not related to each other
-We've checked our CPU on the server, no spikes during that time, we have
plenty of memory. We don't have a lot of workflows running at the same
time. Particularly in the morning when I'm seeing this occur the most, I'm
just about the only user submitting forms and kicking off workflows.
-We have checked to ensure our times are synced on the server (they are by
1 second) and that we have time zones set in our web applications
-If you manually restart the workflow on one that had errored, it will
process through fine again on the second try (based on that, assuming this
means it can't be related to how the SPD workflow was built or
permissions)
-Tried logging to the workflow history to see where it errors, my logging
prior to the 'approval process' step does appear in the history...
workflow appears to fail upon trying to initiate the first task. Again,
restarting workflow works fine and does assign the task, so I don't think
it could be related to anything with the task list.
Any suggestions that you may have to help me out here would be greatly
appreciated!
Below are the errors logs from 14:
*Unexpected WinWF Internal Error, terminating workflow Id#
f413610c-0981-4c37-9583-1d7cac4f0265
09/12/2013 06:57:42.65 w3wp.exe (0x2768) 0x1740 SharePoint Foundation
Workflow Infrastructure 98d4 Unexpected
System.Reflection.TargetInvocationException: Exception has been thrown by
the target of an invocation. ---> Microsoft.SharePoint.SPException: The
context has expired and can no longer be used. (Exception from HRESULT:
0x80090317) ---> System.Runtime.InteropServices.COMException (0x80090317):
The context has expired and can no longer be used. (Exception from
HRESULT: 0x80090317) at
Microsoft.SharePoint.Library.SPRequestInternalClass.SetHttpParameters(String
bstrHttpMethod, String bstrRequestDigest, UInt32 flags, Guid
gTranLockerId, Byte[]& ppsaImpersonateUserToken, Boolean bIgnoreTimeout,
String bstrUserLogin, String bstrUserKey, UInt32 ulRoleCount, String
bstrRoles, Boolean bWindowsMode, ApplicationPrincipalInfo& pAppUserInfo,
Boolean bInvalidateCachedConfigurationProperties, Int32 lAp...
09/12/2013 06:57:42.65* w3wp.exe (0x2768) 0x1740 SharePoint Foundation
Workflow Infrastructure 98d4 Unexpected ...pDomainId,
ISPManagedObjectFactory pFactory, Boolean bCallstack) at
Microsoft.SharePoint.Library.SPRequest.SetHttpParameters(String
bstrHttpMethod, String bstrRequestDigest, UInt32 flags, Guid
gTranLockerId, Byte[]& ppsaImpersonateUserToken, Boolean bIgnoreTimeout,
String bstrUserLogin, String bstrUserKey, UInt32 ulRoleCount, String
bstrRoles, Boolean bWindowsMode, ApplicationPrincipalInfo& pAppUserInfo,
Boolean bInvalidateCachedConfigurationProperties, Int32 lAppDomainId,
ISPManagedObjectFactory pFactory, Boolean bCallstack) --- End of inner
exception stack trace --- at
Microsoft.SharePoint.SPGlobal.HandleComException(COMException comEx) at
Microsoft.SharePoint.Library.SPRequest.SetHttpParameters(String
bstrHttpMethod, String bstrRequestDigest, UInt32 flags, Guid gTranLock...
09/12/2013 06:57:42.65* w3wp.exe (0x2768) 0x1740 SharePoint Foundation
Workflow Infrastructure 98d4 Unexpected ...erId, Byte[]&
ppsaImpersonateUserToken, Boolean bIgnoreTimeout, String bstrUserLogin,
String bstrUserKey, UInt32 ulRoleCount, String bstrRoles, Boolean
bWindowsMode, ApplicationPrincipalInfo& pAppUserInfo, Boolean
bInvalidateCachedConfigurationProperties, Int32 lAppDomainId,
ISPManagedObjectFactory pFactory, Boolean bCallstack) at
Microsoft.SharePoint.SPGlobal.CreateSPRequestAndSetIdentity(SPSite site,
String name, Boolean bNotGlobalAdminCode, String strUrl, Boolean
bNotAddToContext, Byte[] UserToken, String userName, Boolean
bIgnoreTokenTimeout, Boolean bAsAnonymous) at
Microsoft.SharePoint.SPSite.GetSPRequest() at
Microsoft.SharePoint.SPSite.get_Request() at
Microsoft.SharePoint.SPSite.InitSite() at
Microsoft.SharePoint.SPSite.get_SystemAccount() at Microsoft.Shar...
09/12/2013 06:57:42.65* w3wp.exe (0x2768) 0x1740 SharePoint Foundation
Workflow Infrastructure 98d4 Unexpected
...ePoint.WorkflowActions.Helper.SplitMultiUserToObjects(WorkflowContext
context, Object val) at
Microsoft.SharePoint.WorkflowActions.Helper.MultiDisplayNameSemicolon(WorkflowContext
context, Object val) --- End of inner exception stack trace --- at
System.RuntimeMethodHandle._InvokeMethodFast(Object target, Object[]
arguments, SignatureStruct& sig, MethodAttributes methodAttributes,
RuntimeTypeHandle typeOwner) at
System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags
invokeAttr, Binder binder, Object[] parameters, CultureInfo culture,
Boolean skipVisibilityChecks) at
System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags
invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) at
System.Reflection.MethodBase.Invoke(Object obj, Ob...
09/12/2013 06:57:42.65* w3wp.exe (0x2768) 0x1740 SharePoint Foundation
Workflow Infrastructure 98d4 Unexpected ...ject[] parameters) at
Microsoft.SharePoint.WorkflowActions.CoerceActivity.Coerce() at
Microsoft.SharePoint.WorkflowActions.CoerceActivity.Execute(ActivityExecutionContext
provider) at System.Workflow.ComponentModel.ActivityExecutor1.Execute(T
activity, ActivityExecutionContext executionContext) at
System.Workflow.ComponentModel.ActivityExecutor1.Execute(Activity
activity, ActivityExecutionContext executionContext) at
System.Workflow.ComponentModel.ActivityExecutorOperation.Run(IWorkflowCoreRuntime
workflowCoreRuntime) at System.Workflow.Runtime.Scheduler.Run()*