Which add-ins are really necessary for Outlook 2007?

I was having "data file could not be read" problems all of a sudden when I started Outlook 2007 (started today). Running scanpst found errors are made fixes, but did not solve the problem. Doing a search revealed that some people had good luck removing or disabling add-ins which were not installed as part of the OS installation. I took a look and found these add-ins active in Outlook:

Adobe Contribute Plugin
Microsoft Exchange Unified Messaging
Microsoft Office Groove Proxy for Outlook Add-in
Microsoft Office SharePoint Server Colleague Import Add-in
Microsoft Outlook Mobile Service
OneNote Notes about Outlook Items
Outlook Change Notifier
Windows Search Email Indexer

I think Change Notifier is associated with Apple, but not sure if it's either Quicktime or iTunes. I have to assume the Adobe one is for Photoshop, Reader, or FlashPlayer. I'd like to find out for sure where these all come from and whether I lose anything if I decide to disable any of them.

BTW, I did disable Change Notifier and it did seem to fix the data file problem on opening Outlook, but I still would like to know about the rest of these.

These are mine...I have no problems:

Thanks. I think Change Notifier was the culprit. Not sure what iTunes would be doing with my email anyway.

tony22 said:

Thanks. I think Change Notifier was the culprit. Not sure what iTunes would be doing with my email anyway.

Hi there
it probably wants your Bank details / credit card numbers - ready to bill you for non existant music.

Cheers
jimbo

Well, it came back. A search on Yahoo shows this seems to be an occasional problem with Outlook 2007. I don't know what to do except try to disable more of these add-ins. How many more of add-ins can I disable without affecting basic email functionality?