Error 401 Unauthorized

[mehadihasan123]

A 401 Unauthorized error occurs when a client cannot access the requested resource because it has not provided sufficiently valid credentials or authentication tokens. This error indicates that the client does not have permission to access the resource without first authenticating.

The reasons for the 401 "Unauthorized" error may be the following:

No Authentication: The client did not provide any credentials (login and password, token, etc.) for authentication.
Invalid Credentials: The customer provided credentials, but they were invalid, incorrect, or out of date.
Lack of sufficient rights: The client has provided authentication data, but does not have sufficient rights to access the requested resource.
Authentication Expired: If the authentication token has a limited uk email list lifespan, it may expire and the client can no longer use it for access.
Re-authentication required: The server may require re-authentication, for example if the user's session has expired.
To fix the 401 Unauthorized error, you can take the following steps:

Provide Credentials: Make sure you have provided the correct credentials such as username and password, authentication token, or other required information.
Check your credentials: Make sure the credentials you provided are correct and valid. If possible, test them in another context or app.
Check access rights: If you have administrative capabilities, check if the user has sufficient access rights to the resource. Check the authorization settings.
Refresh the token or session: If an authentication token is used, check its expiration date and refresh it if necessary.
Re-authentication: If the user's session has expired or another issue has occurred that requires re-authentication, authenticate again.
Contact Administrators: If you are unable to resolve the issue yourself, please contact administrators or technical support for assistance.
It's important to understand that the 401 Unauthorized error is related to authentication and authorization, and fixing it usually requires providing the correct credentials or resolving access issues.