TF271001: The server response was: 4.4.1 Connection timed out type SmtpException. TFS Email Notifications Delayed or Not Sent

by Xavier Dilip Kumar 17. July 2013 19:53

Detailed Message:

TF271001: An error occurred while attempting to send an e-mail notification to the following address: email id. Further e-mail notification errors that occur within the next five minutes might not be logged. Verify that the e-mail notification settings are correct in the Team Foundation Administration Console.
Exception Message: Service not available, closing transmission channel. The server response was: 4.4.1 Connection timed out (type SmtpException)

Error :

TFS Email Notifications Delayed or Not Sent


I started experiencing problems with TFS alert notification mails. TFS Email Notifications were Delayed or Not received. The TFS alert notification was working fine for the past 2 years.


Following are the investigation done to fix the notification problem

1. Verified the SMTP server and found out no problems with it. (Anonymous sender was enabled in Exchange for
2. Verified whether "Visual Studio Team Foundation Background Job Agent" service is running in TFS App tier. Service was running fine. (Restarted the service too)

3. I ran the follwoing query to find tfs job failures in the tbl_JobHistory table in the Tfs_Configuration database

SELECT TOP 10 DATEADD(hour, -7, StartTime) as StartTimePDT, Result, ResultMessage
FROM [Tfs_Configuration].[dbo].[tbl_JobHistory] WHERE JobId = 'A4804DCF-4BB6-4109-B61C-E59C2E8A9FF7' AND Result <> 0

Note: The JobId GUID for the “Team Foundation Server Event Processing” job with the namespace: “Microsoft.TeamFoundation.JobService.Extensions.Core.NotificationJobExtension” is 'A4804DCF-4BB6-4109-B61C-E59C2E8A9FF7'

Query result:

"There were errors or warnings during notification delivery.    35573/35598 emails delivered.  0/0 soap notifications delivered.   25 errors.  0 warnings.    Set /Service/Integration/Settings/NotificationJobLogLevel in the TF registry to 2 to see errors and warnings"   

4. Queried [dbo].[tbl_EventNotification] table in the [Tfs_DefaultCollection] database to see for failures.

SELECT * FROM [Tfs_DefaultCollection].[dbo].[tbl_EventNotification]

Found many records with failed status.

5. Deleted all records with failed status

Delete FROM [Tfs_DefaultCollection].[dbo].[tbl_EventNotification] where [status] = 'failed'

Note : I dint see any harm in deleting all the records from FROM [Tfs_DefaultCollection].[dbo].[tbl_EventNotification]

Delete FROM [Tfs_DefaultCollection].[dbo].[tbl_EventNotification]

6. Queried [dbo].[tbl_EventNotification] table in the [Tfs_DefaultCollection] database to see the notification event backlogs count.

SELECT * FROM [Tfs_DefaultCollection].[dbo].[tbl_ClientEvent]

Found around 1000 pending events that need to be processed.

7. Deleted all pending events backlogs

Delete FROM [Tfs_DefaultCollection].[dbo].[tbl_ClientEvent] 

Verified the fix by trigging the new alerts, All the alerts got processed and also received the notification mails.

link to turn on verbose log

link to Decrease or Increase notification delay settings in TFS


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TFS | TFS 2010 | TFS 2012

Decrease or Increase notification delay settings in TFS

by Xavier Dilip Kumar 16. July 2013 21:39


By default notification delay is set to 120 seconds. The notifications are processed in batchs for every 2 minutes. The notification delay can be set in the TF registry
Note: The TFS registry mentioned is not the Windows Registry on the TFS server.


The registry value can be changed using the PowerShell script or using the TfsReg tool

Following is the command to set the notification delay to 1 minute using the tool:

tfsreg.exe /server:http://tfs:8080/tfs /path:/Service/Integration/Settings/NotificationJobDelay /value:60

Note: Restart the TFS IIS app pool for the change to take effect.

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TFS | TFS 2010 | TFS 2012

TFS event 7005 and 7006 warnings

by Xavier Dilip Kumar 4. July 2013 10:47


The default threshold is set to 30 seconds, The warning occurs when the threshold exceeds.

Log Name:      Application
Source:        TFS Services
Date:          1/27/2013 8:53:37 AM
Event ID:      7006
Task Category: None
Level:         Warning
Detailed Message: There are no active requests for service host DefaultCollection that exceed the warning threshold of 30.
Log Name:      Application
Source:        TFS Services
Date:          1/27/2013 8:52:22 AM
Event ID:      7005
Task Category: None
Level:         Warning
Detailed Message: A request for service host DefaultCollection has been executing for 37 seconds, exceeding the warning threshold of 30.


Increase the threshold limit, if you experience performance issues due to these warnings. execute the following SQL statements

use [<Collection DB name>]

DECLARE @registryUpdates typ_KeyValuePairStringTableNullable
INSERT @registryUpdates ([Key], [Value])
SELECT '#\Configuration\ServiceHostMonitor\TotalExecutionElapsedThreshold\', '300'
EXEC prc_UpdateRegistry 1, 'Test', @registryUpdates, 1

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TFS | TFS 2010 | TFS 2012

Error during serialization or deserialization using the JSON JavaScriptSerializer. The length of the string exceeds the value set on the maxJsonLength property.

by Xavier Dilip Kumar 2. July 2013 20:12


  • The Work item with large amount of data in the custom HTML fields fails to open after migration.
  • The error may occur for the build logs with large amount of data as well.


Try to modify web.config in \Program Files\Microsoft Team Foundation Server 11.0\Application Tier\Web Services to adjust the size.
The default length is 20MB, so try a larger value than that. The value below is for 50MB. Experimentation may be necessary to find the best value.

<add key="maxJsonLength" value="52428800" />

Value is specified in byte

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TFS | TFS 2010

Roll Back a checkin in TFS

by Xavier Dilip Kumar 26. June 2013 12:26


TFS rollback is a client side component which is available in TFS 2010 power tools install.

1) Through UI

Right click on the source folder
Select View History menu

 Select rollback entire changeset menu 

 Check-in the pending rollback changes 

2) Through Command line :
tf rollback /changeset:changesetfrom~changesetto [itemspec] [/recursive]
[/lock:none|checkin|checkout] [/version:versionspec]
[/keepmergehistory] [/noprompt] [/login:username,[password]]

tf rollback /toversion:versionspec itemspec [/recursive]
[/lock:none|checkin|checkout] [/version:versionspec]
[/keepmergehistory] [/noprompt] [/login:username,[password]]

Note :If you are attempting to rollback changes for another user, make sure you get latest on the files you are attempting to rollback; otherwise you will see the error: "No changes to roll back."


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TFS | TFS 2010

TF900560: Could not start build: The file exists.

by Xavier Dilip Kumar 25. June 2013 14:43


TFS2012 server process the build request but the build controller fails.


Reimaged the build controller,Since the controller was not responding to any command and also TFS admin console crashed.

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TFS | TFS 2010 | TFS 2012

TF215097: An error occurred while initializing a build for build definition <Build Definition Name> rootArgumentValues

by Xavier Dilip Kumar 25. June 2013 14:27


The values provided for the root activity's arguments did not satisfy the root activity's requirements: ''Build Parameter':
The following keys from the input dictionary do not map to arguments and must be removed: <Parameter Name>. 
Please note that argument names are case sensitive. Parameter name: rootArgumentValues


The error appears when the build parameter is removed from the template template and still avaiable in the build tables.

The table tbl_BuildDefinition contains all information for a build definition. ProcessParameters column will contains the build parameter details


Refresh the build definition and save it. In the process tab, there is a Refresh button that will reload the build definition and the process template and synchronize them


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TFS | TFS 2010 | TFS 2012

TF215104: Failed to stop build 23649: it did not respond to a workflow cancellation request.

by Xavier Dilip Kumar 24. June 2013 07:23


"Run On Agent (reserved build agent <Agent1>). There was no endpoint listening at <TFS url> that could accept the message. This is often caused by an incorrect address or SOAP action. See InnerException, if present, for more details.Cannot stop the build. Details: Operation did not complete in 00:01:00. (After trying to stop the build) TF215104: Failed to stop build 23649: it did not respond to a workflow cancellation request."


1) Identify and Remove the queued builds data from dbo.tbl_BuildQueue table in the Tfs_CollectionName database.

select * from dbo.tbl_BuildQueue
delete from dbo.tbl_BuildQueue where QueueID = 'ID'

2) Remove the build agent from the controller

Identify the build agent and note the value of ReservationId and AgentId.
SELECT * FROM tbl_BuildAgent

DELETE FROM tbl_BuildAgentReservation WHERE ReservationId = [ReservationId]
UPDATE tbl_BuildAgent SET ReservationId = NULL WHERE AgentId = [AgentId].

Remove the Build Agent from TFS Admin Console.

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TFS | TFS 2010

TF14098: Access Denied User [Domain]\User needs Label permission(s) for $/Source

by Xavier Dilip Kumar 18. June 2013 20:33



The users should have project level permission to label any folders and files in version control using visual studio IDE. The error occurs when team project does not have project users/groups permissions set at project level but its set on folders.

Add the users/groups permission at project level.


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C# Code to get the Work Item URL

by Xavier Dilip Kumar 18. June 2013 16:48

var projectCollection = TfsTeamProjectCollectionFactory.GetTeamProjectCollection(new Uri(tfsURL + "/" + collectionName));
var myService = projectCollection.GetService<TswaClientHyperlinkService>();
string wiURL = myService.GetWorkItemEditorUrl(workItem.Id).ToString();

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About the author

My name is Xavier Dilip Kumar Jayaraj and I am a Software Configuration Management Engineer with a background in application development, Build & packaging using Install Shield.

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The information provided here is based on my expreriences, troubleshooting and online/offline findings. It can be used as is on your own risk without any warranties and I impose no rights.

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