Knowledge Base

Troubleshooting signature management app sign-in (login) problems


You are not able to sign in to the signature management app (


Use the links below to learn about recommended solutions regarding:

Error AADSTS50020: User account does not exist in tenant

While trying to sign in to the signature management app, the following (or similar) error is displayed:

AADSTS50020: User account '<account name>' from identity provider '<provider>' does not exist in tenant 'CodeTwo Sp. z o.o. Sp.k.' and cannot access the application '<application ID>' in that tenant. The account needs to be added as an external user in the tenant first. Sign out and sign in again with a different Azure Active Directory user account.

This error occurs if you have two Microsoft accounts with the same email address, and you used your personal Microsoft 365 (Office 365) account to sign in. You need to choose your work account instead.

To solve the problem, sign in at again, and when the Microsoft's sign-in page appears and you're asked to choose which account you want to use, select the following account type: Work or school account (Fig. 1.).

Account type window
Fig. 1. The account type prompt in Office 365.

Multiple errors that start with: WebApiResponseException: One or more errors occurred

If you are not able to sign in to the signature management app, and an error notification appears that includes multiple error messages that starts with:

EmailSignatures.Console.Services.WebApiProxy.WebApiResponseException: One or more errors occurred.
--- End of stack trance from previous location where exception was thrown ---

then try refreshing the OAuth 2.0 access tokens for your tenant in CodeTwo Admin Panel, as described in the user's manual.

See also:

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