Windows e-mail access denied

First test the mailbox in a web browser; if it works there, repair New Outlook and reconnect the account rather than removing the Windows security update.

1. Check whether the email account itself works

Open Microsoft Edge or another browser:

• For an Outlook.com, Hotmail, Live, or MSN address, sign in to Outlook.com with that email address and its Microsoft account password.^1^
• For Gmail, Yahoo, iCloud, or an internet-provider address, open that provider’s normal webmail site.
• For a work or school account, sign in through Microsoft 365 and open Outlook.^2^

Then check whether recent messages appear.

• If webmail also says “Access Denied”: this is an account-access issue, not merely the Outlook app. Use the email provider’s password/account-recovery service. For a work or school account, contact the organization’s IT desk or Microsoft 365 administrator.
• If webmail works: continue below. You can use webmail temporarily while fixing the app.

2. Repair New Outlook

1. Close Outlook.
2. Select Start → Settings → Apps → Installed apps.
3. Find Outlook (new) or Outlook for Windows.
4. Select the three dots beside it, and then Advanced options.
5. Select Repair.
6. Open Outlook and wait about a minute to see whether messages update.

Repair attempts to fix the app without removing its data. The Advanced options or Repair choice is not available for every application; if it is missing, proceed to the next section.^3^

3. Remove and reconnect the affected account

Do this only if the mailbox worked correctly in the browser, so the account password and server access are known to be working.

1. In New Outlook, select View → View settings.
2. Select Accounts → Your accounts.
3. Beside the affected email account, select Manage.
4. Select Remove.
5. If asked, choose Remove from this device, not “Remove from all devices.”
6. Return to Accounts → Your accounts and select Add account.
7. Enter the email address, select Continue, and complete the sign-in prompts.

Removing an account from Outlook does not delete the email account itself, but it removes locally cached content. Microsoft warns that Remove from all devices can remove Microsoft Cloud data across Outlook clients, so avoid that option.^4^

4. If “Access Denied” remains

Return to:

Start → Settings → Apps → Installed apps → Outlook (new) → three dots → Advanced options

Select Reset, reopen Outlook, and add the account again. Reset can remove the app’s locally stored settings and data.^3^

If Reset does not help:

1. Open Start.
2. Find new Outlook for Windows.
3. Expand its options and select Uninstall.
4. Open Microsoft Store, search for Outlook for Windows, and reinstall it.^5^

Do not uninstall the security update based only on timing. Microsoft’s current New Outlook known-issues page does not identify this exact combination of “Access Denied” and email not updating as a confirmed update problem.^6^

Getting someone to walk through it

If assistance is still needed:

• For Outlook.com, select Help in Outlook.com, describe the problem, and choose Still need help? → Yes when offered.^7^
• Open the Windows Get Help app and enter New Outlook Access Denied.
• Microsoft 365 Home subscribers can use the Contact Us option on Microsoft Support.^6^
• If Gmail, Yahoo, iCloud, or ISP webmail also denies access, contact that provider’s official account-access support.
• For work or school email, contact the organization’s IT desk.

Provide support with the exact error wording, the type of address—Outlook.com, Gmail, Yahoo, work/school, or another provider—and whether the same mailbox works in a browser. Do not provide anyone with the password or a two-step verification code.

References

1. Outlook on the web
2. How to sign in to Outlook on the web | Microsoft Support
3. Windows 11
4. New Outlook
5. Outlook for Windows not responding, hangs, freezes, or stops working
6. Fixes or workarounds for recent issues in new Outlook for Windows
7. How to sign in to Outlook.com | Microsoft Support