Knowledge Base

How to fix the ‘Need admin approval’ error while trying to sign in to the Manage Signatures App

Problem:

While trying to sign in to the Manage Signatures App, a user receives the following error:

Need admin approval. CodeTwo Email Signatures for Office 365 User Logon needs permission to access resources in your organization that only an admin can grant. Please ask an admin to grant permission to this app before you can use it.

Solution:

First of all, make sure that this user has been added to the Manage Signatures App users list in the CodeTwo Admin Panel (learn more). If that’s the case and the problem persists, this might mean that application options in your Microsoft 365 are preventing users from using the CodeTwo application. You can access these options to resolve this problem in two different ways, by using either the Azure portal or the Microsoft 365 admin center. The changes you will be making are in fact restoring the default Microsoft 365 settings.

Enabling app registration by users in the Azure portal

Use the Azure portal to allow users to register applications. To do this:

  1. Log in to the Azure Active Directory admin center.
  2. Click Azure Active Directory in the menu on the left and then click Users as shown in Fig. 1.

 Accessing the Users page in Azure Active Directory.
Fig. 1.  Accessing the Users page in Azure Active Directory.

  1. Go to User settings and under App registrations select Yes (Fig. 2.).

Allowing users to register applications in Azure AD.
Fig. 2. Allowing users to register applications in Azure AD.

If the solution above resolved the problem and the user is able to sign in to the Manage Signatures App, you can return to your previous settings.

Allowing users to choose if an app can access their information

Use the Microsoft 365 admin center to allow users to let third-party apps access their information. Follow the steps below to do so:

  1. Log in to the Microsoft 365 admin center.
  2. Select the classic admin center layout using the switch in the upper right corner (Fig. 3.).

Switch used to change between the classic and the new admin center layout.
Fig. 3. Switch used to change between the classic and the new admin center layout.

Info

If you are unable to switch to the classic view, go to this link and skip to step 4 below.

  1. Expand the Settings list and select Services & add-ins (Fig 4., item 1).
  2. Select Integrated Apps (Fig 4., item 2).

Opening the Integrated Apps pane in Microsoft 365 admin center.
Fig. 4. Opening the Integrated Apps pane in Microsoft 365 admin center.

  1. In the pane that opens, turn On the Let people in your organization decide whether third-party apps can access their Office 365 information option (Fig. 5.).

Allowing organization members to decide to permit third-party apps to access their information.
Fig. 5. Allowing organization members to decide to permit third-party apps to access their information.

  1. Click Save to submit changes.

If the solution above resolved the problem and the user is able to sign in to the Manage Signatures App, you can return to your previous settings.