Hi Carvalho, Noel,
Thank you for asking this question on the Microsoft Q&A Platform.
There are three circumstances that can lead to encountering this error:
- The web application has exceeded its billing threshold, resulting in the deactivation of your site.
- The web application has been manually halted through the portal.
- The web application has surpassed a resource quota limit, typically associated with a Free or Shared scale service plan.
If this pertains to a third-party application sourced from the office store, it indicates that the service is presently inaccessible. Conversely, if it is an add-in crafted internally, you should proceed by adhering to the outlined instructions here: Web Apps: "Error 403 – This web app is stopped".
Additionally, consider these troubleshooting measures as they may assist in resolving the issue:
- Ensure that you access the website using HTTPS rather than HTTP, as URLs beginning with "http://" lack security protocols.
- Sign out from all tabs within your current browser and clear cached files. Try logging in again using your Learn ID credentials.
- Test logging in from an incognito window or private browsing mode after signing out from your current browser session.
- Alternatively, switch to a different browser and attempt the login process again.
These steps are intended to offer alternative approaches to resolving the issue you are encountering.
If you encounter any future issues, please feel free to contact us, and we will be pleased to assist you further.
If you have found the answer provided to be helpful, please click on the "Accept answer/Upvote" button so that it is useful for other members in the Microsoft Q&A community.
(NOTE: Please ensure that all sensitive or private details are concealed before posting).
Thank you.