Hello Claudio Palagano,
Thank you for reaching out to Microsoft Q&A.
The ports and server addresses you tried are perfectly correct for a traditional POP setup! However, the reason you are getting this error is that Microsoft recently disabled "Basic Authentication" for all personal Outlook accounts. They now require a newer security standard called "Modern Authentication."
To connect your account, you must let the system auto-configure it as an Exchange account. Since Exchange uses an .ost(offline cache) file instead of the .pst file you want, you can let Outlook set up the modern connection, and then use a background rule to instantly funnel all your mail into a local PST file, perfectly mimicking the old POP behavior.
Here is how to set up the workaround:
Step 1: Auto-Configure the Account
- Go to File > Add Account.
- Type your @outlook.com email address and click Connect. (Note: Do not check the "set up manually" box).
- A modern Microsoft login window will appear. Enter your password to successfully add the account.
Step 2: Create a Local PST File
- Return to your main Outlook screen.
- On the Home tab, click New Items > More Items > Outlook Data File.
- Name the file (e.g., "Claudio Outlook PST") and save it to your computer. This creates your new local PST inbox on the left sidebar.
Step 3: Create the Mimic Rule
- Click on your new @outlook.com Inbox.
- Go to the Home tab and click Rules > Manage Rules & Alerts.
- Click New Rule. Under "Start from a blank rule," select Apply rule on messages I receive and click Next.
- Do not check any conditions on the first screen (this ensures the rule applies to all emails). Click Next, and click Yes on the warning pop-up.
- On the Actions screen, check Move it to the specified folder.
- Click the underlined word Specified at the bottom, select the Inbox of your new PST file from Step 2, and click Finish then Apply.
Now, every time an email arrives at your Outlook address, Classic Outlook will instantly move it into your local PST file, exactly as if it were a POP account.
I hope this helps you get your inbox set up exactly how you prefer! If you have any updates regarding the issue, please feel free to share them with me.
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