Error Message- Unable to Access Outlook Account

Jasmine Guy 20 Reputation points
2025-09-12T13:03:25.2766667+00:00

Hi! I received the following error message. How should I proceed to rectify the situation?

UTC Date: 2025-09-12T12:57:39.678Z
Client Id: A513C1F39B68449B9E8FFEDCD2F36244
Session Id: 31cdb9d7-b6bb-48b8-ae29-cec4b42af25f
Client Version: 20250905004.03
BootResult: accessDenied
Back Filled Errors: Unhandled Rejection: Error: 500:undefined|undefined:undefined
err: Microsoft.Exchange.Data.Storage.MailboxUnavailableException
esrc: StartupData
et: ServerError
estack: Microsoft.Mapi.MapiExceptionUnknownUser
st: 500
ehk: X-OWA-Error
efe: CH0PR04CA0009
ewsver: 15.20.9094.21
emsg: ErrorPermanentStorage
Outlook | Web | Outlook.com | Email
0 comments
Answer accepted by question author
Darhyl Amizola 49,955 Reputation points Independent Advisor
2025-09-12T13:41:16.8833333+00:00

Hey there! Nice to meet you!

Based on your description, kindly try to perform the following workarounds in case this works:

  1. Restart your device and router, then try signing in again.
  2. Clearing the cache and cookies of your browser.

To clear your browser cache and cookies in Microsoft Edge, go to Settings > Privacy > Clear browsing data and select Ctrl+Shift+Del. You can also type "edge://settings/clearbrowserdata" in your address bar to access this function.

  1. Disabling extensions / going incognito or in-private browsing.

In Microsoft Edge, select Extensions located to the right of your browser address bar, then select Manage Extensions.

Select the toggle next to the extension you want to turn off.

  1. Changing browsers. (Google Chrome, Microsoft Edge, Safari, etc.)
  2. Disconnect from the VPN or Proxy server.

Open Settings and click/tap on the Network & Internet icon.

Click/tap on VPN on the left side, click/tap on the connected VPN (ex: "MPN") on the right side you want to disconnect, and click/tap on the Disconnect button.

When finished, you can close Settings.

  1. Using different devices and network services.
  2. Try waiting a few hours, as there may be temporary server instability.

If it doesn't work, you may also follow the Sign-in helper tool through this link: https://support.microsoft.com/account-billing/i-can-t-sign-in-to-my-microsoft-account-475c9b5c-8c25-49f1-9c2d-c64b7072e735

Thank you for your kindness and understanding! Please feel free to let me know if you need anything else.

Best Regards,

Darhyl

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