If you change the pasword of your TFSService/TFSSetup/TFSReports accounts, beware.
You need to change the password on the following components:
Services:
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TFSServerScheduler
Sharepoint Timer
Code Coverage Analysis Service
Application Pools (IIS)
===============
Check them all : You should change the passwords which use the TFSService, TFSSReports or TFSSetup accounts.
Shared Data Sources on Reports Server
==========================
Change the passwords for the OLAP and DS shared data sources, and for any other Shared Data Sources, Models or other objects as the case may be.
Any other places Please post

Changing passwords. Beware! :)
Karim9337
There is a TFS administrators utility that should be used when changing the password on the service accounts. The utility updates the password in all of the places you mention. This tool can also be used to change the service account that is used and for a variety of other administrative tasks.
Running TFSAdminUtil:
1) Open a command prompt on the TFS Application Tier machine
2) Cd to %programfiles%\Microsoft Visual Studio 2005 Team Foundation Server\Tools
3) Run "tfsadminutil / "
4) To update service account passwords, use the changepassword command
BTW: I think you've identified all of the places where the password needs to be updated.
vmadhavapeddi
Bill,
Thanks for this. I will use the TFSAdmin utility from now onwards!
:)
Jean-Pierre
sanjak
I would imagine they are _stored_ in the SQL Server database for Reporting Services.
You can _configure_ them on http://<your server name>/Reports/ . Navigate to the dat a source (e.g. TfsOlapReportDS or TfsReportDS) and edit the security credentials there.
mahjayar
AyendeRahien