How to uninstall the software

CodeTwo Email Signatures 365 runs entirely in the cloud and is managed via a web browser. However, some of its optional components are either deployed in the Microsoft 365 admin center to selected users (e.g. the modern CodeTwo Signatures Web Add-in for Outlook) or installed locally (the legacy CodeTwo Signatures Add-in for Outlook). The Outlook add-ins are necessary only if you are using the program in Outlook (client-side) or combo mode. Uninstalling the product completely means that you deregister your tenant from our services (which includes cancelling your subscription), remove the software's components installed on Microsoft Azure servers as well as uninstall all components from your local computer.

There might also be cases when you wish to temporarily stop the program from adding email signatures without canceling your subscription, and this article mentions such scenarios as well. Finally, remember that CodeTwo Email Signatures 365 can run in three modes, so you need to choose the uninstallation procedure applicable to the way you run your software. Click the links below to read more.

• How to completely uninstall CodeTwo Email Signatures 365 working in cloud (server-side) mode
• How to completely uninstall CodeTwo Email Signatures 365 working in Outlook (client-side) mode
• How to completely uninstall CodeTwo Email Signatures 365 working in combo mode
• How to automatically remove connectors and transport rule for a Microsoft 365 tenant
• How to manually remove connectors and transport rule in Microsoft 365

How to uninstall CodeTwo Email Signatures 365 working in cloud (server-side) mode

Uninstall the desktop components (now deprecated)

First, if you've been using any desktop components of CodeTwo Email Signatures 365 you need to uninstall them from your local computer. This applies to the Manage Signatures App (deprecated) and Custom Attributes Sync App (deprecated).

1. Go to your Windows Control Panel.
2. Click on Programs and Features (or Add or Remove Programs in older Windows versions).
3. Find CodeTwo Email Signatures for Office 365 - Manage Signatures App on the list, right-click on it and choose Uninstall.
4. Follow the uninstaller wizard to remove the applications.
5. If you've been using the Custom Attributes Sync App, uninstall it the same way.

Deregister your tenant

Next, you need to deregister your Microsoft 365 tenant from our service. Sign in to CodeTwo Admin Panel and select your tenant on the Tenants page. Next, select Tenant deregistration in the left menu and click Deregister permanently, as shown in Fig. 1. Confirm your action by clicking YES.

Fig. 1. Deregistering a tenant from CodeTwo Admin Panel.

This starts a wizard that will automatically delete the Exchange Online connectors & transport rule added by CodeTwo in your Microsoft 365 tenant, cancel your subscription, and remove your tenant from CodeTwo Admin Panel. In the Authorization step, click  to copy the code shown in Fig. 2.

Fig. 2. The authorization code in the tenant deregistration wizard.

Next, click Authorize to open a Microsoft sign-in page. Paste the copied code in the space provided and click Next. Then, sign-in to your Microsoft 365 tenant by providing global admin credentials. Once you have successfully signed in, the Microsoft sign-in page will close automatically. Proceed in the wizard.

In the Confirm step, select the checkbox (Fig. 3.) to confirm the removal of email connectors and transport rule, and the removal of your tenant from CodeTwo Admin Panel. Once you click Next, the deregistration process will start automatically.

Fig. 3. Confirming tenant deregistration.

Once the deregistration is finished, you can close the wizard.

Remove the CodeTwo domain

After you have performed all the above steps, you will notice that the unique CodeTwo domain (which was assigned to your Microsoft 365 tenant during the provisioning of our services) is still visible in your Microsoft 365 admin center (Fig. 4.). You can delete it from there. Still, we recommend that you leave this domain – it has no impact on your mail flow, but allows us to quickly restore your settings if you want to resume using our service.

Fig. 4. Removing the CodeTwo domain in the Microsoft 365 admin center.

Remove CodeTwo data from your Azure Active Directory

The last step is to remove software entries from your Azure Active Directory (Azure AD). To do that, follow the guidelines below.

1. Sign in to the Microsoft Entra admin center (or Azure portal – the UIs are similar, so the guidelines below apply to both portals).
2. Go to Azure Active Directory (Identity) > Applications > Enterprise applications (or Azure Active Directory > Enterprise applications in Azure Portal).
3. You can see several CodeTwo Email Signatures... entries on the list (Fig. 5.). The number of CodeTwo apps displayed here might vary depending on your configuration (for example, if you used the Autoresponder feature, you will see an additional CodeTwo entry).

Fig. 5. Accessing CodeTwo apps in Azure Active Directory.

4. Click one of the CodeTwo apps on the list and go to its Properties page. There, you can remove the application by clicking the Delete button (Fig. 6.). to open its Overview page. and open its Properties page. There, you can remove the application by clicking the Delete button (Fig. 6.).

Fig. 6. Deleting an application from Azure AD.

5. Repeat this for all apps whose names begin with CodeTwo Email Signatures.
6. Now go to Azure Active Directory (Identity) > Applications > App registrations (or Azure Active Directory > App registrations in Azure Portal). A list of application registrations is shown (if nothing is displayed, click View all applications).
7. Find all entries associated with CodeTwo Email Signatures 365 and remove them by clicking on the entry and selecting Delete on the Overview page that opens.

Uninstall the signatures preview add-in (CodeTwo Signatures Web Add-in for Outlook)

See this section to learn how to remove the Web Add-in centrally via the Microsoft 365 admin center. 

Remove the cache files of the desktop apps (now deprecated)

After you uninstall the ClickOnce applications, the apps' temporary files and your signature templates might still remain on your local disk. If you want to remove those files, delete the following folders:

C:\Users\<username>\AppData\Local\CodeTwo\CodeTwo Email Signatures for Office 365 (if you used the Manage Signatures App)
C:\Users\<username>\AppData\Local\CodeTwo\CodeTwo Email Signatures for Office 365 Custom Attributes Sync (if you used the deprecated Custom Attributes Sync app)

The locations above might differ, depending on your environment.

How to uninstall CodeTwo Email Signatures 365 working in Outlook (client-side) mode

Remove the Outlook add-in

• Uninstall the modern CodeTwo Signatures Web Add-in for Outlook
• Uninstall the legacy CodeTwo Signatures Add-in for Outlook (COM Add-in)

Uninstall the Web Add-in

The CodeTwo Signatures Web Add-in for Outlook is deployed centrally to selected users via the Microsoft 365 admin center. To remove the Web Add-in for these users, follow the steps below: 

1. Sign in to the Microsoft 365 admin center. Note that only the admin who deployed the Web Add-in or a global admin can remove it.
2. Go to Settings > Integrated apps.
3. Select CodeTwo for Outlook (or CodeTwo Signatures) from the list of apps and click Remove app in the pane that opens (Fig. 7.).

Fig. 7. Removing the CodeTwo Signatures Web Add-in for Outlook in the Microsoft 365 admin center.

4. Confirm the remove request and click Remove. 

The Web Add-in will be automatically removed from both Outlook desktop clients and Outlook on the web (OWA).

Once you've removed the Web Add-in, proceed to this step.

Uninstall the legacy COM Add-in

First, sign in to app.codetwo.com, turn off all your Outlook (client-side) signature rules and save the changes. This will clear all CodeTwo signatures on the computers of users who have been using the CodeTwo Signatures Add-in for Outlook.

Then, you need to uninstall the CodeTwo Signatures Add-in for Outlook. If the add-in was installed manually, you need to instruct your users to uninstall it from their computers the same way as you uninstall other CodeTwo desktop components.

If you deployed the add-in with Microsoft Intune, go to this article to learn how to uninstall it for all users or group(s) of users in your organization.

If you installed the CodeTwo Signatures Add-in for Outlook for multiple users with GPO, you can uninstall it from all machines at once by following these steps:

1. Press Win + R to launch the Run console, type gpmc.msc and click OK (Fig. 8.) to open the Group Policy Management Editor.

Fig. 8. Accessing the Group Policy Management Editor.

2. Find the GPO you used to deploy the CodeTwo Signatures Add-in for Outlook and edit it (Fig. 9.).

Fig. 9. Editing the GPO used to install the add-in.

3. In the GPO settings, go to User Configuration > Policies > Software Settings > Software installation, right-click the software package you used to deploy the add-in and click All Tasks > Remove (Fig. 10.).

Fig. 10. Removing the add-in’s software package.

4. Choose the option to Immediately uninstall the software from users and computers (Fig. 11.) and click OK to confirm.

Fig. 11. Choosing the option to uninstall software package immediately.

5. The add-in should be uninstalled from users’ profiles on the next logon. To speed it up, users can use Command Prompt or PowerShell to force the Group Policy update with the gpupdate /force command (Fig. 12.) The console can log off the user automatically, so that the logon script can uninstall the add-in right away.

Fig. 12. Forcing a Group Policy update.

Uninstall the desktop components

Next, if you've been using any desktop components of CodeTwo Email Signatures 365 you need to uninstall them from your local computer. This applies to the Manage Signatures App (deprecated) and Custom Attributes Sync App (deprecated) as well as the CodeTwo Signatures Add-in for Outlook (COM Add-in).

1. Go to your Windows Control Panel.
2. Click on Programs and Features (or Add or Remove Programs in older Windows versions).
3. Find your CodeTwo application on the list:
   • CodeTwo Email Signatures for Office 365 - Manage Signatures App
   • CodeTwo Signatures Add-in for Outlook
   right-click it and select Uninstall.
4. Follow the uninstaller wizard to remove the application(s).
5. If you have the CodeTwo Signatures Add-in for Outlook (COM Add-in) installed, and it's not been removed by your organization via GPO (see above), uninstall it in the same way.
6. If you've been using the Custom Attributes Sync App, uninstall it in the same way.

Deregister your tenant

Finally, you need to deregister your tenant from our service. Sign in to CodeTwo Admin Panel and select your tenant on the Tenants page. Next, select Tenant deregistration in the left menu and click Deregister, as shown in Fig. 13. Confirm your action by clicking YES.

Fig. 13. Deregistering a tenant from CodeTwo Admin Panel (Outlook mode).

This starts a wizard that will automatically cancel your subscription and remove your Microsoft 365 tenant from CodeTwo Admin Panel. Go to the Confirm step and select the checkbox (Fig. 14.) to confirm the removal. Once you click Next, the deregistration process will start automatically.

Fig. 14. Confirming tenant deregistration (Outlook mode).

How to uninstall CodeTwo Email Signatures 365 working in combo mode

Combo mode is a combination of cloud (server-side) and Outlook (client-side) signature modes.

First, remove the Outlook add-in as described here.

Then, follow the uninstall instructions for the cloud mode.

How to automatically remove connectors and transport rule for a Microsoft 365 tenant

When you deregister your Microsoft 365 tenant from CodeTwo Admin Panel (as described above), this also cancels your subscription. If you wish to temporarily or completely stop our service from adding signatures to your emails, but want to keep your subscription, follow the instructions below to only remove the Exchange Online connectors and transport rule instead of completely deregistering the tenant.

Sign in to CodeTwo Admin Panel and select your tenant on the Tenants page. Next, select Tenant deregistration in the left menu and click Only remove connectors, as shown in Fig. 15.

Fig. 15. Temporarily removing the Exchange Online connectors from a Microsoft 365 tenant.

This starts a wizard that will automatically delete the Exchange Online connectors & transport rule added by CodeTwo in your Microsoft 365 tenant. In the Authorization step, click  to copy the code shown in Fig. 16.

Fig. 16. The authorization code in the Exchange Online connectors removal wizard.

 

Next, click Authorize to open a Microsoft sign-in page. Paste the copied code in the space provided and click Next. Then, sign-in to your Microsoft 365 tenant by providing global admin credentials. Once you have successfully signed in, the Microsoft sign-in page will close automatically. Proceed in the wizard.

In the Confirm step, select the checkbox (Fig. 17.) to confirm the removal of email connectors and transport rule. Once you click Next, the process will start automatically.

Fig. 17. Confirming connectors removal.

If you wish to restore the processing of emails by CodeTwo Email Signatures 365, access your tenant's settings and recreate the connectors as shown in this article.

How to manually remove connectors and transport rule in Microsoft 365

1. Sign in to the Exchange admin center and go to Mail flow > Rules.
2. Select the CodeTwo transport rule and delete it (Fig. 18.).

Fig. 18. Removing the CodeTwo transport rule.

3. Now, click Connectors in the menu on the left. Select the CodeTwo inbound connector and delete it. Then, select and delete the CodeTwo outbound connector (Fig. 19.).

Fig. 19. Removing CodeTwo connectors.