Workaround 1: Verify subscription status.

Ensure that your subscription or trial period is active and has not expired. Trident can be accessed only if you have any of the plans listed below.

Workaround 2: Enable Zoho Mail for your Zoho One bundle.

Confirm if you have a personal or business email account from Zoho Mail as part of your Zoho One paid subscription. If not, this may be the cause of the error.

To enable Zoho Mail for your Zoho One paid subscription:

1. Log in to your Zoho One (admin) account from https://one.zoho.com.

2. Navigate to the left pane and select More Apps.    

3. Toggle to the Unassigned Apps tab.

4. Search for Mail and click Add.

5. Back in the Trident app, click Access Trident from the License Required page to sign in.
   

Workaround 3: Verify account details.

Ensure that you are signed in with the Zoho Mail account associated with the paid subscription or trial period.

Note: If the issue persists despite performing the above steps, contact customer support at trident@zohosupport.com for further assistance.

Workaround 4: Verify Zoho Mail license.

If your account shows as Unlicensed in the Mail Admin Console, it means that a valid mail license has not been assigned to your user account, even though your organization is on a paid plan. Without an active license, you will not be able to access Trident.

If you are in the Mail Flexi plan, licenses are not assigned automatically and must be manually allocated by the organization admin.

To assign a license:

1. Go to the Admin Console.

2. From the left pane, hover over the Users section.

3. Click on Storage View.

4. Assign the appropriate plan to the required user.