Lync 2010 server address book issue

Little bit of background. I'm presently running co-existence Lync 2010/2013. Lately, Lync 2010 servers have been having issues downloading address book to Lync 2010 server users while users on Lync 2013 users are fine. I've tested the address book to Lync 2013 which is fine and did the same on Lync 2010 server and failed. Below is the result.  I've tried locating the ABS\Handler location and no luck, reset IIS and rebot the frontend servers still not working. Any help on this issue will be appreciated.

C:\> Test-CsAddressBookService -TargetFqdn jhmsglync.win.ad.jhu
.edu -UserSipAddress "user1@contoso.edu" -Verbose
VERBOSE: Reading Registrar port from topology process started.
VERBOSE: Reading Registrar port '5061' from topology process successfully
finished.
VERBOSE: Workflow Instance Id '69b451fa-3eab-4ca5-a37b-07bf0000fb84', started.
VERBOSE: Command line executed is 'Test-CsAddressBookService -TargetFqdn
frontenpool -UserSipAddress "user1@contoso.edu" -Verbose'.


Target Fqdn   : frontenpool
Target Uri    : https://frontenpool/abs/handler
Result        : Failure
Latency       : 00:00:00
Error Message : The remote server returned an error: (404) Not Found.

Diagnosis     : X-MS-Server-Fqdn : FE01.CONTOSO.COM
                Content-Length : 1245
                Cache-Control : private
                Content-Type : text/html
                Date : Sat, 22 Mar 2014 04:05:08 GMT
                Server : Microsoft-IIS/7.5
                X-AspNet-Version : 2.0.50727
                X-Powered-By : ASP.NET



VERBOSE: Workflow 'Microsoft.Rtc.SyntheticTransactions.Workflows.STAbsWorkflow'
 started.
Workflow 'Microsoft.Rtc.SyntheticTransactions.Workflows.STAbsWorkflow'
completed in '2E-05' seconds.
An exception 'The remote server returned an error: (404) Not Found.' occurred
during Workflow Microsoft.Rtc.SyntheticTransactions.Workflows.STAbsWorkflow
execution.
Exception Call Stack:    at
Microsoft.Rtc.SyntheticTransactions.Activities.HttpRequestActivity.InternalExec
ute(ActivityExecutionContext executionContext)
   at
Microsoft.Rtc.SyntheticTransactions.Activities.SyntheticTransactionsActivity.Ex
ecute(ActivityExecutionContext executionContext)
   at System.Workflow.ComponentModel.ActivityExecutor`1.Execute(T activity,
ActivityExecutionContext executionContext)
   at
System.Workflow.ComponentModel.ActivityExecutorOperation.Run(IWorkflowCoreRunti
me workflowCoreRuntime)
   at System.Workflow.Runtime.Scheduler.Run()

'QueryTargetUri' sequence activity started.
'QueryTargetUri' sequence activity completed in '1.59E-05' seconds.
'ReadUriFromTopology' activity started.
Reading target uri from topology process started.
Successfully found target uri 'https://frontenpool/abs/handler'.
'ReadUriFromTopology' activity completed in '5.07E-05' seconds.
'GetWebTicket' activity started.
Trying to get web ticket.
Web Service Url :
https://frontenpool/WebTicket/WebTicketService.svc
Using Machine Certificate authentication.
GetWebTicketActivity completed.
'GetWebTicket' activity completed in '0.0249655' seconds.
'HttpRequest' activity started.
Sending Http GET Request.
 File Path  = https://frontenpool/abs/handler/f-12DC.lsabs
 Attempt Number = 1
 Time Out (milliseconds) = 60000
WebException 'The remote server returned an error: (404) Not Found.' occurred
during ABS workflow execution.
Sending Http GET Request.
 File Path  = https://frontenpool/abs/handler/f-12DB.lsabs
 Attempt Number = 2
 Time Out (milliseconds) = 60000
WebException 'The remote server returned an error: (404) Not Found.' occurred
during ABS workflow execution.
Sending Http GET Request.
 

File Path  = https://frontenpool/abs/handler/f-12DA.lsabs
 Attempt Number = 3
 Time Out (milliseconds) = 60000
WebException 'The remote server returned an error: (404) Not Found.' occurred
during ABS workflow execution.
VERBOSE: Workflow Instance ID '69b451fa-3eab-4ca5-a37b-07bf0000fb84' completed.
VERBOSE: Workflow run-time (sec): 0.0850817.