Outlook cannot connect to Exchange Server 2010 RC using POP3

Just installed Exchange Server 2010 RC and when trying to test it with my outlook in POP3 configuration I received this error:

"Task 'user@domain.com - Receiving' reported error (0x800CCC0F) : 'The connection to the server was interrupted. If this problem continues, contact your server administrator or Internet service provider (ISP).'"

The problem was that for some reason after installing Exchange Server 2010 RC, service Microsoft Exchange POP3 did not start automatically, so I had to open services.msc (via "run"), and start this service manually, also changed its startup type to Automatic for future. This solved the problem.

Outlook cannot connect to Exchange Server 2010 RC using IMAP

Just installed Exchange Server 2010 RC and when trying to test it with my outlook in IMAP configuration I received this error:

"Task 'Synchronizing subscribed folders for user@domain.com.' reported error (0x8004DF0B) : 'Outlook cannot synchronize subscribed folders for user@domain.com. Error: The connection to the server is unavailable. Outlook must be online or connected to complete this action. If you continue to receive this message, contact your server administrator or Internet service provider (ISP).'"

The problem was that for some reason after installing Exchange Server 2010 RC, service Microsoft Exchange IMAP4 did not start automatically, so I had to open services.msc (via "run"), and start this service manually, also changed its startup type to Automatic for future. This solved the problem.

Cannot add Outlook Data File - Maximum file size exceeded.

If you're trying to add .pst data file to your outlook profile and get the following error

"The file "drive:/path_to_your_.pst/outlook.pst" has reached its maximum size. To reduce
the amount of data in the file, select some items that you no longer need and
then permanently delete them by pressing SHIFT + DELETE".

Obviously you can not delete any messages because you can't add the data file itself. This case should be only for Outlook 2003 without sp2 because it limits .pst file size to somewhat 2GB, however I encountered a situation where this message was generated by Outlook 2007.

Fastest workaround for this is to share the .pst file and add it to outlook 2007 on another computer in you local area network and delete some messages to lower the size of .pst file. That is if you have a network and another PC with outlook installed.

The other way is to download microsoft tool for shrinking .pst files, then fix the file with SCANPST.EXE ) (if you have outlook 2007 it will be located in "drive:\Program Files\Microsoft Office\OFFICE12") and then try adding the Data File again.

Cannot start Microsoft Office Outlook. Cannot open the Outlook window.

When launching Microsoft Outlook 2007 you get the following error message:
"Cannot start Microsoft Office Outlook. Cannot open the Outlook window."

This might help:
Start->Run (or Win+R)
then type the following: Outlook.exe /resetnavpane

If this does not fix your problem, you can always try System Restore.