Cannot update alert template SP2013

Question

HI,
I am trying to modify the existing default alert email template in SharePoint 2013. I have done the following but the template never changes:
1)made a copy in C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\15\TEMPLATE\XML\alerttemplates.xml into customalerttemplates.xml
2)Modified the customalerttemplates.xml then run the following:
stsadm -o updatealerttemplates -url http://webapp/sitecol/ -f "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\15\TEMPLATE\XML\customalerttemplates.xml"
3)restart IIS and SPTimer Service
4)try apply for a new alert. Received the alert email but in default template.
*note this worked on my SP2010 environment*
Please help.

Answer 1

You would have been good to go if you had not created a custom template for alerts. If you decided to create your own AlertTemplate in the custom_alerttemplates.xml, you will need to set the set the SPList.AlertTemplate property of each list for which you
need set the custom alerts template. This property will need to be set to the unique
Name attribute that you assigned to your new AlertTemplate section. You have to do this using the SharePoint object model, which only leaves you with two choices. Either write some compiled code which is triggered by an event, such as a
feature activation or list creation, or write a PowerShell script which calls the object model. Bellow is some code I’ve written to do this using PowerShell. After running this script, you will need to delete and re-subscribe to the alerts for the target list.
add-pssnapin Microsoft.SharePoint.PowerShell -erroraction silentlycontinue
$contentService = [Microsoft.SharePoint.Administration.SPWebService]::ContentService
$AlertsTemplateCollection =  new-object Microsoft.SharePoint.SPAlertTemplateCollection($contentService)
$spWeb = Get-SPWeb -Identity http://yoursitecollectionroot/
$splists = $spWeb.lists
$alertslist = $splists["YourTargetListName"]
$alertslist.AlertTemplate = $AlertsTemplateCollection["YOUR_UNIQUE_TEMPLATE_NAME_VALUE"]
$alertslist.Update()
$spWeb.Dispose()
More details are available here:
http://blog.zebsadiq.com/post/SharePoint-2010-custom-alert-template.aspx
Thanks, Ransher Singh, MCP, MCTS | Click Vote As Helpful if you think that post is helpful in responding your question click Mark As Answer, if you think that this is your answer for your question.