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When Outlook doesn’t shutdown cleanly, your Outlook Data File (either a .pst or .ost file) can be left in an unverified state that can cause one of the following errors to appear the next time you boot Outlook:
“Outlook cannot open the data file filename until it has been checked for problems.” “Microsoft Office Outlook’ exited without properly closing your Outlook data file ‘drive:\Users\username\AppData\Local\Microsoft\Outlook\outlook.ost’. ‘Microsoft Office Outlook’ must be restarted. If this error message recurs, contact support for ‘Microsoft Office Outlook’ for assistance.” “The data file filename was not closed properly’. This file is being checked for problems.”
“Outlook cannot open the data file filename until it has been checked for problems.”
“Microsoft Office Outlook’ exited without properly closing your Outlook data file ‘drive:\Users\username\AppData\Local\Microsoft\Outlook\outlook.ost’. ‘Microsoft Office Outlook’ must be restarted. If this error message recurs, contact support for ‘Microsoft Office Outlook’ for assistance.”
“The data file filename was not closed properly’. This file is being checked for problems.”
At this point Outlook needs to perform a reconciliation of the data file, a simple process that ‘cleans up’ the file from an incorrect shutdown. While the verification is happening, you will see a small ‘gear’ icon in the lower-right corner of Outlook:
Again, it’s okay to continue using Outlook as you would normally while this is happening as this reconciliation process happens in the background. When this icon disappears, the .pst file or the .ost file is verified.
If you shutdown Outlook while the gear icon is present, then verification must restart the next time you run Outlook. We recommend that you leave Outlook running until the gear icon disappears before shutting down.
An incorrectly shut down Outlook Data File may occur for one of the following reasons:
If you believe you’re seeing this last issue often and need to shutdown Outlook shortly before shutting down your computer, then it may be better to shut down Windows when the Outlook window is still open instead of shortly afterwards.
Michael Affronti Outlook Program Manager
Comments: (39) Collapse
I am having data check problems when upgrading form O2K3 to O2K7. I can see all of the things in the imported *.pst file (tasks, calendar, notes, e-mail) and can even do a "test account" e-mail that shows complete. I just can't actually DO anything without the message coming up that it can't see data files that are clearly there. (So I can't send/recv e-mail either) I am guessing from the comments that the "plug in" causing the problem is the synch to my cell phone which is running on Windows Mobile 5 and Microsoft Active Sync 4.2. This is pretty sad because they are all MS products and shouldn't bork up this process. I shouldn't have to uninstall all the phone software.
Removed the RSS feeds and problem disappeared.
I continue to have the same pop-up when I open Outlook saying outlook.pst cannot be accessed. Data Error (cyclic redunancy error). I have left my outlook up for over 5 hours this afternoon for the files to be checked and the message is still there. How long does this process take. When I first open Outlook, it acts as though it is going to open and will even attempt to download my email from Google, then as soon as I click to open a message the above message is displayed. The "gear" icon is still showing the the bottom right hand corner of the screen. Do I need to completely re-install Outlook for my email to work? THis has been going on for months. I did not have this problem with my old system which had Windows XP and Office 2003. My new system has Vista and Office '07.
We have two computers in Office, Laptop running Vista and desktop running XP Pro. Problem only began occurring within last month. Help! Eset Nod virus current on both.
Denise: The error you are seeing with Data Error (cyclic redundancy error) is a different problem, indicating that your PST or OST file has become corrupt. You can find more information on repairing the PST file in this KB article: support.microsoft.com/.../287497
OST2PST tool for exporting OST data in PST format. Convert the Exchange files into Outlook format and save them at your desired location. Recover the data with few simple clicks. Visit http://www.ost2psttool.com/
OST2PST tool for exporting OST data in PST format. Convert the Exchange files into Outlook format and save them at your desired location. Recover the data with few simple clicks.
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