Login failed for user 'Domain Name\

When you see the error ' Login failed for user 'Domain Name\<SharePoint Server Name>', follow the below command: 

STSADM.EXE -o provisionservice -action start -servicetype “Microsoft.Office.Excel.Server.ExcelServerSharedWebService, Microsoft.Office.Excel.Server, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c”