Upgrade from TFS 2013 update 4 to TFS 2015 update 1 - Scheduled backup alerts fail

hi,

i performed in-place upgrade tfs 2013 update 4 tfs 2015 update 1. scheduled backup job hasn't been sending notifications team foundation administrators since upgrade.

an error appears in application event log after backup job scheduled run. here portion of error:

detailed message: tf400703: unable initialize specified service microsoft.teamfoundation.server.core.tswaserverhyperlinkservice.
exception message: tf400367: request not performed due host type mismatch. please check connection information , verify information correct. request executed against deployment, application. (type unexpectedhosttypeexception)
exception stack trace:
  @ microsoft.teamfoundation.server.core.tswaserverhyperlinkservice.microsoft.teamfoundation.framework.server.ivssframeworkservice.servicestart(ivssrequestcontext systemrequestcontext)
  @ microsoft.teamfoundation.framework.server.serviceprovider.getserviceimpl[t](ivssrequestcontext requestcontext)

here portion of job history configuration database:

notification not delivered.

notification: databasebackupcompletionevent (deliverytype: emailhtml; address: )

exception: microsoft.teamfoundation.framework.server.unexpectedhosttypeexception: tf400367: request not performed due host type mismatch. please check connection information , verify information correct. request executed against deployment, application.
   @ microsoft.teamfoundation.server.core.tswaserverhyperlinkservice.microsoft.teamfoundation.framework.server.ivssframeworkservice.servicestart(ivssrequestcontext systemrequestcontext)
   @ microsoft.teamfoundation.framework.server.serviceprovider.getserviceimpl[t](ivssrequestcontext requestcontext)
   @ microsoft.teamfoundation.jobservice.extensions.core.notificationjobextension.addsubscriptioninformation(ivssrequestcontext requestcontext, teamfoundationnotification notification)
   @ microsoft.teamfoundation.jobservice.extensions.core.notificationjobextension.sendemail(ivssrequestcontext requestcontext, smtpclient client, teamfoundationmailservice mailservice, teamfoundationnotification notification, teamfoundationidentity subscriber, teamfoundationidentity recipient)

there solution error?

i sorry having difficulties tfs 2015 update 1. issue reported microsoft.

it fixed in tfs 2015 update 2. unfortunately, there no workaround.

thanks,
--vladimir

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