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. Uninstalling the product completely means that you uninstall the Manage Signatures App from your local computer, deregister your tenant from our services, cancel your subscription and remove the software's components installed on Microsoft Azure servers. There might be cases when you wish to temporarily prevent the program from adding email signatures without canceling your subscription. This article describes various possible scenarios. Click the links below to read more.

How to completely uninstall CodeTwo Email Signatures for Office 365

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

Deregister your tenant

Next, you need to deregister your tenant from our services. Open one of the supported browsers and go to the product's website (global Office 365 users | Office 365 Germany users). Launch CodeTwo Admin Panel and log in. Enter 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 (Fig. 1.).

The tenants card with highlighted Manage Signatures button.
Fig. 1. The Tenants card in CodeTwo Admin Panel.

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

The Deregister section of a tenant.
Fig. 2. The Deregister page of a tenant.

This will start a wizard that will delete the transport rule and connectors added by CodeTwo in your Office 365 tenant and will also remove any associations with your tenant in the CodeTwo Email Azure Service.

Important

If multi-factor authentication (MFA) was enabled for the admin account used to connect to the Office 365 tenant, remember to use the app password instead of the regular Office 365 password. Learn more

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 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 CodeTwo domain

After you performed all the above steps, you can 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 here. 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.

ESIG for O365 CodeTwo domain in Microsoft 365 admin center
Fig. 3. The CodeTwo domain that remains after you uninstall the software.

Info

If you 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 to open its Overview page. There, you can remove the application by clicking the delete button (Fig. 6.).

ESIG for O365 remove from Azure AD 5-2
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 that begin with CodeTwo Email Signatures for Office 365 or CodeTwo Sent Items Update (Fig. 7.) and remove them in the similar way as previously described.

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

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 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.

Open one of the supported browsers and go to the product's website (global Office 365 users | Office 365 Germany users). Launch the Admin Panel and log in. Enter 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. 8.).

The Exchange Online connectors section of a tenant.
Fig. 8. The Exchange Online connectors section of a tenant.

This starts a wizard that will delete the transport rule and connectors added by CodeTwo in your Office 365 tenant.

Important

If multi-factor authentication (MFA) was enabled for the admin account used to connect to the Office 365 tenant, remember to use the app password instead of the regular Office 365 password. Learn more

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. 8.) 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.

Log in to your Office 365 tenant. Go to Admin (Fig. 9.), find Exchange in the left-hand side menu and click on it. Exchange admin center opens. Go to mail flow (Fig. 10.). On the rules tab, find the CodeTwo rule and delete it (Fig. 11.). Now go to the connectors tab, find two CodeTwo connectors (one is inbound and the other - outbound) and delete them both (Fig. 12.).

Office 365 - accessing admin center
Fig. 9. Accessing Microsoft 365 admin center.

Mail flow configuration in Exchange On-line dashboard.
Fig. 10. Mail flow configuration in Exchange Online admin center.
CodeTwo transport rule that should be removed.
Fig. 11. The CodeTwo transport rule that needs to be removed.
CodeTwo connectors that should be removed.
Fig. 12. The CodeTwo connectors that need to be removed.

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