What if Outlook can not open after the failure of transferring Outlook related files?

Applies to: Microsoft Outlook 2010Microsoft Office Outlook 2007

As we know, there are many situations that lead to Outlook system errors or even fail to open. Errors are also different.

There is a human-induced error situation for Outlook. It's because we fail to transfer Outlook related files in the system disk, especially when there are other mailboxes, such as Hotmail, under the same login account. For example, we fail to cut the Outlook folder under C:\user\{username}\AppData\Local\Microsoft\Outlook into F driver. When we log into Outlook, system will prompt "Cannot start Microsoft Outlook. Cannot not open the Outlook window. Cannot open this folder collection. File access denied. You don't have access to C:\user\{username}\AppData\Local\Microsoft\Outlook\locou7_hotmail0.ost." What should we do in this situation?

At this time, we just need to cut and paste the C:\user\{username}\AppData\Local\Microsoft\Outlook\locou7_hotmail0.ost file and other .OST files in the directory to the desktop.

First, locate the corresponding files according to the above path:

locate the corresponding files   

Then, cut the corresponding .OST file:

Cut the corrupted OST file

And paste it to the desktop:
Paste the corrupted OST file to another location

Try to start the Outlook again to see if it can be opened as expected.

If the issue persists, go to the Forums for better solutions.

Looking forward to your comments and suggestions!

Looking forward to your valuable comments After using Yibaodian, please take a few seconds to rate this article in the feedback table at the bottom when available, so as to help us improve our work. If you have any suggestions or good ideas, please write them down in "Additional Comments". (To get your technical issues solved more quickly, you can discuss them in the related Microsoft Community posts)