Each Workshare user account is tied to a unique email address. When a user clicks
Sign in with Microsoft work account, they enter their Microsoft work user name, also known as their User Principal Name (UPN), and password.
Workshare looks up their UPN in Azure AD and finds the user’s primary SMTP address (proxyAddress attribute). Workshare then checks to ensure the domain of the primary SMTP address matches the domain of the UPN. If it does, Workshare uses the primary SMTP address as the unique email address for that user’s Workshare account.
Note: If you are paying for an Exchange license, Exchange automatically provides an SMTP address for each of your users.
If the SMTP address cannot be found or if the domain of the SMTP address does not match the domain of the user’s UPN, the user sees this error message:
Note: This error message may also be displayed in the following circumstances: If you have created a completely new user in AD, it may take 10 to 50 minutes for their information to sync from AD to Azure AD. If the user tries to sign in to Workshare using “Sign in with Microsoft work account” during this time, they will see this error message. Simply wait 10 to 50 minutes, then try again.