Fixing OAuth Errors When Connecting Through Delpha Connected App

Fix Salesforce OAuth errors by manually installing the Delpha Connected App or using the Approve Uninstalled Connected Apps permission.

Error Message

When connecting your LinkedIn account, the following error message may appear.

We can't authorize you because of an OAuth error. For more information, contact your Salesforce administrator.

OAUTH_APPROVAL_ERROR_GENERIC : An unexpected error has occurred during authentication. Please Try again.

Root cause

Salesforce restriction on uninstalled Connected Apps (Sept 2025)

Starting in early September 2025, Salesforce blocks end users from authorizing or using uninstalled Connected Apps. Only apps that are explicitly installed (or users with special permissions) will work. (Salesforce)

Why Delpha is impacted

Delpha’s Connected App (DelphaAssistantV2) is not installed with the Delpha Assistant package. That makes it an uninstalled application. New users attempting to connect LinkedIn through Delpha will fail until the app is installed (or the user has a bypass permission). (Salesforce)

How to fix it

Case 1 — The user doing the Delpha connection has the System Administrator profile

1. In Setup, open Connected Apps OAuth Usage (Quick Find → “Connected Apps OAuth Usage”). (Salesforce)

2. Locate DelphaAssistantV2.

3. In Actions, click Install (you’ll typically also see Block beside it).

4. Confirm installation. After this, end users can authorize via Delpha normally.

Tip: In this list, an app showing “Install” is not yet installed; one showing “Uninstall” is already installed.

If you are using a Delpha version below 3.62, you will have to apply the same remediation to the connected app DelphaApp

Case 2 — The user doing the Delpha connection isn’t a System Administrator

1. Create a temporary Permission Set that grants the system permission: Approve Uninstalled Connected Apps. (Salesforce Admins)

2. Assign this Permission Set to the user who will perform the install.

3. Have that user repeat Case 1 to click Install on DelphaAssistantV2.

4. Remove the temporary Permission Set after installation.

If you are using a Delpha version below 3.62, you will have to apply the same remediation to the connected app DelphaApp

Notes & validation

• Existing users who previously authorized an uninstalled app may continue working in some cases, but new authorizations are blocked unless the app is installed or the user has the new permission.

• If “Install” isn’t visible, you may already have the app installed (you’ll see “Uninstall” instead), or you’re not viewing from an account with rights to install.

• To double-check, open Connected Apps OAuth Usage, select the app, and review Manage App Policies. (Salesforce)

That’s it—once DelphaAssistantV2 is installed, new users can connect LinkedIn through Delpha without hitting the new restriction.