How to uninstall the software

CodeTwo Email Signatures for Office 365 has several components, most of which run in the cloud. The Manage Signatures App is a ClickOnce app installed locally, while the CodeTwo Signatures Add-in for Outlook is installed by the users. Uninstalling the product completely means that you uninstall the Manage Signatures App from your local computer, deregister your tenant from our services, at the same time cancelling your subscription, and remove the software's components installed on Microsoft Azure servers. If you were using the client-side mode or combo mode, you should also inform the users that they should uninstall CodeTwo Signatures Add-in for Outlook. 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 for Office 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 uninstall CodeTwo Email Signatures for Office 365 working in server-side mode

Uninstall the desktop components (Manage Signatures App & Custom Attributes Sync App)

First, you need to uninstall the ClickOnce apps from your local computer:

  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 application(s).
  5. If you use the Custom Attributes Sync App, uninstall it in the same way.

Deregister your tenant

Next, you need to deregister your tenant from our services. Open the CodeTwo Admin Panel in one of the supported browsers and go to the management page of your tenant by clicking the Manage tenant (ESIG for O365 settings button2 13px) button next to the tenant's name (Fig. 1.).

Tenants card
Fig. 1. Tenants card in the CodeTwo Admin Panel.

Select Deregister from the left menu (Fig. 2.) and click Deregister tenant [Name].

Deregister tenant window
Fig. 2. Deregister tenant window.

This will start a wizard that will delete the transport rule and the connectors added by CodeTwo in your Office 365 tenant and will also remove any associations with your tenant in the CodeTwo Email Azure Service. To delete the transport rule and the connectors, the wizard will provide you with a temporary code to associate our service with your account for use on the Microsoft sign-in page. After entering the code, sign into your Office 365 tenant as usual by providing your global admin credentials.

Warning

Be aware that you cannot revert this operation. However, if you change your mind, you can register your tenant again. After the registration, all of your settings (including the defined rules) will be automatically restored (learn more about our data retention policy). Keep in mind you will have to go through the Connectors configuration again.

Remove the CodeTwo domain

After you have performed all the above steps, you will notice that the unique CodeTwo domain (which was assigned to you during the provisioning of our services) is still visible in your Microsoft 365 admin center (Office 365 admin center) (Fig. 3.). You can delete it from there. Still, we recommend that you leave this domain - it does not influence your mail flow but allows us to quickly restore your settings if you want to resume our services.

Removing the CodeTwo domain in Office 365 admin center.
Fig. 3. Removing the CodeTwo domain in Office 365 admin center.

Info

If you have deleted the CodeTwo domain, but you want to go back to using CodeTwo software and need your settings back, contact us.

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. Open Azure Active Directory admin center (or Azure portal - the UIs are similar so the guidelines below apply to both portals). You can also access the Azure AD admin center by logging in to your Microsoft 365 admin center and navigating to Admin centers > Azure Active Directory.
  1. Click Azure Active Directory on the menu (Fig. 4.).

ESIG for O365 remove from Azure AD 3
Fig. 4. How to access Azure Active Directory settings in Azure AD admin center.

  1. Navigate to Enterprise applications > All applications. You can see several CodeTwo entries on the list (Fig. 5.). The number of CodeTwo apps displayed might vary depending on your configuration (for example, if you used Sent Items Update, you will see more CodeTwo entries).

ESIG for O365 remove from Azure AD 4-2
Fig. 5. CodeTwo application entries in Azure AD.

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

Deleting an application from Azure AD
Fig. 6. Deleting an application from Azure AD.

  1. Repeat this for all apps whose names begin with CodeTwo Email Signatures for Office 365 and CodeTwo Sent Items Update.
  2. Now go back to the Azure Active Directory settings (see Fig. 4.) and open the App registrations section from the menu. A list of application registrations is shown (if nothing is displayed, click View all applications).
  3. Find all entries associated with CodeTwo Email Signatures for Office 365 or CodeTwo Sent Items Update (Fig. 7.) and remove them by clicking on the entry and selecting Delete in the Overview page.

ESIG for O365 remove from Azure AD 6
Fig. 7. CodeTwo application registrations in Azure AD.

Uninstall the signature preview app – centralized deployment

If you have centrally deployed the signature preview app (by following this article), you may uninstall it for your users. To remove the add-in for users/groups via the Microsoft 365 admin center, you need to be a global admin of your Office 365 organization.

Follow these steps to centrally manage the deinstallation process:

  1. Log in to Microsoft 365 admin center.
  2. Go to Settings > Add-ins (Fig. 8., items 1 and 2).
  3. Click on CodeTwo Email Signatures for Office 365 Add-in to open the information window as shown in Fig. 8., item 3.

Add-ins window in Microsoft 365 admin center
Fig. 8. Add-ins window in Microsoft 365 admin center.

  1. Select Remove Add-in and confirm (Fig. 9.).

Add-in information window.
Fig. 9. Add-in information window.

Important

The add-in might not be removed for all users immediately. The process usually takes a few minutes, but might take longer (up to 12 hours, according to Microsoft) depending on the number of users. Some users might need to restart their Outlook to see the changes.

If the users installed the signature preview app on their own, instruct them to uninstall it manually from their mail clients, as it will no longer perform any function.

Info

The signature preview add-in is deployed per Office 365 user, not per machine, so it will be automatically removed in both Outlook and Outlook on the web when uninstalled in one of them.

Remove the cache files of the desktop apps

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
C:\Users\<username>\AppData\Local\CodeTwo\CodeTwo Email Signatures for Office 365 Germany (users of the Office 365 Germany version only)
C:\Users\<username>\AppData\Local\CodeTwo\CodeTwo Email Signatures for Office 365 Custom Attributes Sync (if you used the Custom Attributes Sync app)
C:\Users\<username>\AppData\Local\CodeTwo\CodeTwo Email Signatures for Office 365 Germany Custom Attributes Sync (if you used the Custom Attributes Sync app in the Office 365 Germany version of the software)

The locations above might differ, depending on your environment.

How to completely uninstall CodeTwo Email Signatures for Office 365 working in client-side mode

Uninstall the add-in

In the CodeTwo Manage Signatures App, turn off the rules that govern the adding of signatures. 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 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. 10.) to open the Group Policy Management Editor.

Run group policy management console
Fig. 10. Accessing the Group Policy Management Editor.

  1. Find the GPO you used to deploy the CodeTwo Signatures Add-in for Outlook and edit it (Fig. 11.).

Editing the GPO used to install the signatures add-in.
Fig. 11. Editing the GPO used to install the add-in.

  1. 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. 12.).

Removing the add-in’s software package in GPO.
Fig. 12. Removing the add-in’s software package.

  1. Choose the option to Immediately uninstall the software from users and computers (Fig. 13.) and click OK to confirm.

Choosing the option to uninstall software package immediately in GPO.
Fig. 13. Choosing the option to uninstall software package immediately.

  1. 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. 14.) The console can log off the user automatically, so that the logon script can uninstall the add-in right away.

Forcing a Group Policy update.
Fig. 14. Forcing a Group Policy update.

Uninstall the desktop components (Manage Signatures App, Custom Attributes Sync App and CodeTwo Signatures Add-in for Outlook)

Next, uninstall the ClickOnce apps from your local computer:

  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 application(s).
  5. If you use the Custom Attributes Sync App, uninstall it in the same way.

Perform the same steps to uninstall the Custom Attributes Sync App and the CodeTwo Signatures Add-in for Outlook if you have them installed.

Deregister your tenant

Finally, you need to deregister your tenant from our services. Open the CodeTwo Admin Panel in a supported browser. Next, go to the management page of your tenant by clicking the Manage tenant (ESIG for O365 settings button2 13px) button next to the tenant's name (Fig. 15.).

Tenants card
Fig. 15. Tenants card in the CodeTwo Admin Panel.

Select Deregister from the left menu (Fig. 16.) and click Deregister tenant [Name].

Deregister tenant window
Fig. 16. Deregister tenant window.

This will start a wizard that will cancel the tenant's subscription and the tenant will be removed from the CodeTwo Admin Panel.

Warning

Be aware that you cannot revert this operation. However, if you change your mind, you can register your tenant again at a later time.

How to completely uninstall CodeTwo Email Signatures for Office 365 working in combo mode

Combo mode is a combination of server-side and client-side solutions. First, you need to instruct your users to manually uninstall the CodeTwo Signatures Add-in for Outlook as described in the case of client-side mode. Then, follow the instructions on how to completely uninstall CodeTwo Email Signatures for Office 365 working in server-side mode.

How to automatically remove connectors and transport rule for an Office 365 tenant

By default, when you deregister your tenant from the CodeTwo Email Azure Service (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 remove the software's Exchange Online connectors.

Warning

The following instructions on how to remove connectors do not apply if your program is working in client-side mode.

If you are working in combo mode, removing the connectors will stop emails from being routed to CodeTwo Email Azure Service and the signatures will not be added there. However, signatures may still be added for users with installed CodeTwo Signatures Add-in for Outlook unless this service has been disabled as well using the Manage Signatures App.

Use one of the supported browsers to open the CodeTwo Admin Panel. Navigate to the management pages of a chosen tenant by clicking the Manage tenant (ESIG for O365 settings button2 13px) button next to the tenant's name (see Fig. 1.).

Select Exchange Online connectors on the left menu and click Remove connectors (Fig. 17.).

 Exchange Online connectors window
Fig. 17. Exchange Online connectors window.

This starts a wizard that will delete the transport rule and connectors added by CodeTwo in your Office 365 tenant. In the second step of the wizard, a temporary authorization code will be provided that needs to be used to associate our service with your account. Use it on the Microsoft sign-in page that will be displayed once you click Authorize. Then, sign into your Office 365 tenant as usual by providing your global admin credentials.

Since you are still registered with CodeTwo, you can continue editing your rules in the Manage Signatures App. Note that this will not affect your emails at all, because there are no connectors configured, which is required to forward your emails to CodeTwo Email Azure Service for processing.

If you wish to restore the processing of emails by CodeTwo Email Signatures for Office 365, simply go back to the Exchange Online connectors section, click the Configure connectors button (Fig. 17.) and proceed with the connectors configuration wizard.

How to manually remove connectors and transport rule in Office 365

Warning

This option should be used only as a last resort if, for some reason, the connectors removal wizard cannot be completed.

Warning

The following instructions on how to remove connectors do not apply if your program is working in client-side mode.

If you are working in combo mode, removing the connectors will stop emails from being routed to CodeTwo Email Azure Service and the signatures will not be added there. However, signatures may still be added for users with installed CodeTwo Signatures Add-in for Outlook unless this service has been disabled as well using the Manage Signatures App.

Log in to your Office 365 tenant. Go to Admin (Fig. 18.), find Exchange in the left-hand side menu and click on it. Exchange admin center opens. Go to mail flow (Fig. 19.). On the rules tab, find the CodeTwo rule and delete it (Fig. 20.). Now go to the connectors tab, find two CodeTwo connectors (one is inbound and the other - outbound) and delete them both (Fig. 21.).

Accessing Microsoft 365 admin center.
Fig. 18. Accessing Microsoft 365 admin center.

Mail flow configuration in Exchange On-line dashboard.
Fig. 19. Mail flow configuration in Exchange On-line dashboard.

CodeTwo transport rule that should be removed.
Fig. 20. CodeTwo transport rule that should be removed.

CodeTwo connectors that should be removed.
Fig. 21. CodeTwo connectors that should be removed.

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