Troublesome .ost Files in Outlook on Windows 11

Hello All,
On my windows 10 computer, I have always used a single account with all the Domain Emails downloading into a single "Inbox" and a single "Sent" file and single supporting folders . It even downloads a iPhone and Android emails straight to the same Inbox. These are being stored in Outlook Files Folder in Documents as .pst files. But on Windows 11 it opens a full account for each email downloading in each of their Inboxes and supporting folders separately. And this way it is a nightmare. When I open my travel website I will have about 17 email accounts!!! It stores each email as .ost file in AppData/Local/Microsoft/Outlook and does not allow you to choose the same data files.
I have installed complete Office 365 from the Family Version with 6 subscriptions on another computer of mine. On all other computers I have no problems installing as a single application working all emails in that itself.
In fact it is getting to be quite a pain in the you know where and have half a mind to gut it completely and install Windows 10.
Is there any way to have it the usual convenient way on Windows 11.

I've used Microsoft Outlook for many years. I also subscribe to Microsoft 365. We have upgraded to W11 on all our family member computers. Outlook upgraded on all computers problem free.

Your situation certainly sounds strange. I would consider uninstalling Outlook from the problem W11 computer and reinstalling it again from the Windows 365 page.

Hi Gary,
I have twice repaired the installation "online" meaning it drops in completely new application files. Each time its been the same. I'll try it again tomorrow. Please tell me where does it save the .pst files and does it also generate .ost files and saves these in the AppData/local/Microsoft/Outlook folder.

Byte said:

Please tell me where does it save the .pst files and does it also generate .ost files and saves these in the AppData/local/Microsoft/Outlook folder.

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Depending on whether you use a POP or IMAP email account will depend on where your email gets stored. Email accounts using IMAP will be stored in an .OST file and its location is under C:\Users\UserName\AppData\Local\Microsoft\Outlook.

For email accounts using POP, those emails are stored in a .PST file located under "Documents" subfolder "Outlook Files"

Simon Abdullah said:

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Hey?