Issues updating Exchange 2007 to latest CU

I'm currently starting a project to migrate a customer's Exchange server from 2007 to 2013.

Part of the process (according to my understanding at last) is to bring the 2007 server fully up to date (that would be SP3 cu 17 I believe). The server build is currently 08.03.0083.000 which I believe to be SP3 without any CU installed.

However whenever I try to apply a cu (I started with 17 as I understand it doesn't need any further cu, but same issue with cu1) I get an error to the effect that the patch could not be installed because the program to be updated is not installed (see below - it's a French server...):

Not sure what my next step should be from here ?

Suggestions most welcome
Alexandre TakacsCTOAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Amit KumarCommented:
The server build is currently 08.03.0083.000

Are you sure about it, what I found the correct build for Exchange 2007 SP3 is Please refer this article
Alexandre TakacsCTOAuthor Commented:
Running linked script I get:

MYSERVER,No Rollup Updates are installed,,08.03.0083.006

What's next ?!
Re-install SP3, then do the CU17
Determine the Perfect Price for Your IT Services

Do you wonder if your IT business is truly profitable or if you should raise your prices? Learn how to calculate your overhead burden with our free interactive tool and use it to determine the right price for your IT services. Download your free eBook now!

Alexandre TakacsCTOAuthor Commented:

Tried to re-apply SP3 but it does not let me - it apparently "sees" it as already installed (not the grayed out options):

SP3 Install dialog
Is there a way to "force" it ?
You need to re-run the install from the command line:
SETUP.COM /mode:install /ROLES:HT,CA,MB,MT

Prior to this, I'd also re-run the ADPrep components, because it can't hurt. /PS && /P && /PD

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Alexandre TakacsCTOAuthor Commented:
THAT did the trick (SETUP.COM /mode:install /ROLES:HT,CA,MB,MT) !

Thanks ! And CU is now installing fine !
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.