Win 11 Microsoft 365 Outlook classic cannot open

[Julian]

Well for now I am Ok with this adjustments i have reboot it the system and outlook works fine, I am now performing an up to date backup image and later on I will try to find time to affront the name change as you suggested it makes sense, you could in the meantime let me have your instructions on how to change the folder name.
thank you

 

[ChatGPT]

Good plan, Julian — once you’ve taken a fresh image backup, renaming the folder is safe as long as Outlook is closed.
Right now Outlook is using the PST in:
C:\Outlook Files Backup From OneDrive\[email]ggini1@tin.it[/email] - Outlook GG.pst
So we’ll rename only the folder, then point Outlook to the PST in the new folder.

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How to rename the folder (safe method)​

1) Close Outlook completely​

1. Close Outlook.
2. Press Ctrl + Shift + Esc (Task Manager)
3. End task OUTLOOK.EXE if it’s still running.

2) Rename the folder​

1. Open File Explorer → go to C:\
2. Right‑click the folder Outlook Files Backup From OneDrive
3. Choose Rename
4. Rename it to something simpler, for example:
   • Outlook Files
     or
   • Outlook Data

Example new path:
C:\Outlook Files\

3) Start Outlook and “reconnect” the PST​

When you open Outlook after the rename, it may say it can’t find the data file (this is normal).
If you get a message asking to locate the file:

1. Click Browse (or similar)
2. Navigate to the new folder, e.g.:
   C:\Outlook Files\
3. Select:
   [email]ggini1@tin.it[/email] - Outlook GG.pst
4. OK / Next until Outlook opens.

4) Confirm Outlook now points to the new location​

In Outlook:
File → Account Settings → Account Settings → Data Files
Make sure the tin.it PST now shows the new path (no “Backup From OneDrive” in the location).

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If anything goes wrong (easy rollback)​

1. Close Outlook
2. Rename the folder back to the old name
3. Start Outlook again

That will restore it immediately.

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If you tell me what new name you want to use (for example C:\Outlook Files\), I can tailor the exact final path and what you should see in Data Files afterward.

 

[Julian]

Hello, I have completed with the rename of the Outlook folder and here is what I have now: see photo.
The system works fine therefore I will make again a final image backup and that's all for now!.

 

[ChatGPT]

Your screenshots show the setup is now clean and correct:

• POP (tin.it) is using the PST here:
  C:\Outlook Data Files\[email]ggini1@tin.it[/email] - Outlook GG.pst
• IMAP (ngi.it) is using the OST cache in the normal Windows location:
  C:\Users\ggini\AppData\Local\Microsoft\Outlook\...Outlook Test.ost

So the rename worked and Outlook is pointing to the new folder properly.

What you can delete now (to save space)​

Safe to delete​

1) In C:\Outlook Data Files\:

• [email]ggini1@tin.it[/email] - Outlook GG.log (small text log) → safe to delete.

2) Any old folders that are no longer referenced by Outlook, such as:

• C:\Outlook Files\ (old folder name)
• C:\Outlook Files Backup From OneDrive\ (old backup folder)

But do this safety check first:

• Outlook → File → Account Settings → Account Settings → Data Files
• Make sure no Location paths still point to those old folders.
  (From your screenshot, they don’t — everything points to C:\Outlook Data Files\ now.)

Do NOT delete​

• C:\Outlook Data Files\[email]ggini1@tin.it[/email] - Outlook GG.pst (this is your real POP mail storage)
• Any .ost files in AppData\Local\Microsoft\Outlook (normal IMAP cache)

Important: close Outlook before deleting​

Before you delete any Outlook folders/files:

1. Close Outlook
2. Task Manager → ensure OUTLOOK.EXE is not running

After deleting the old folders, reboot once and open Outlook to confirm all is still OK.
If you want, post one screenshot of what’s inside the old folders you plan to delete, and I’ll tell you exactly what’s safe (and what to keep) before you remove anything.