Repeating the announcement,
The Operations Working Group is shutting down OAuth 1.0a and HTTP Basic Auth in 2024. They have been deprecated since 2023 and their role in authorization has replaced by OAuth 2.0 which the standard authorization method for most systems. This change will have three key dates:
March 1st, 2024: New OAuth 1.0a application registrations are disabled. Existing applications will not be impacted. HTTP Basic Auth will not be impacted.
May 1st, 2024: Sysadmins will start brownouts to find applications that are still using OAuth 1.0a or HTTP Basic Auth
June 1st, 2024: OAuth 1.0a and HTTP Basic Auth will be shut down.
Current Oauth 1.0a support is being turned off. Changing to Oauth 2.0 is necessary for Login to continue to work.
Note critical days from https://github.com/openstreetmap/operations/issues/867#issuecomment-191195405