diff --git a/backend/oauth_connect.json b/backend/oauth_connect.json
index 2b1edfdf6f..72962c19ee 100644
--- a/backend/oauth_connect.json
+++ b/backend/oauth_connect.json
@@ -76,8 +76,6 @@
     "auth_url": "https://www.linkedin.com/oauth/v2/authorization",
     "token_url": "https://www.linkedin.com/oauth/v2/accessToken",
     "scopes": ["w_member_social"],
-    "extra_params_callback": {
-      "redirect_uri": "https://app.windmill.dev/oauth/callback/linkedin"
-    }
+    "req_body_auth": true
   }
 }
diff --git a/backend/windmill-api/src/oauth2.rs b/backend/windmill-api/src/oauth2.rs
index 3eda008b59..988acbc12e 100644
--- a/backend/windmill-api/src/oauth2.rs
+++ b/backend/windmill-api/src/oauth2.rs
@@ -91,6 +91,7 @@ pub struct OAuthConfig {
     scopes: Option<Vec<String>>,
     extra_params: Option<HashMap<String, String>>,
     extra_params_callback: Option<HashMap<String, String>>,
+    req_body_auth: Option<bool>,
 }
 
 #[derive(Clone, Debug, Serialize, Deserialize)]
@@ -209,6 +210,7 @@ pub async fn build_oauth_clients(base_url: &str) -> anyhow::Result<AllClients> {
                 scopes: None,
                 extra_params: None,
                 extra_params_callback: None,
+                req_body_auth: None,
             },
             v.clone(),
             false,
@@ -241,6 +243,9 @@ pub fn build_basic_client(
     };
 
     let mut client = OClient::new(client_params.id, auth_url, token_url);
+    if config.req_body_auth.unwrap_or(false) {
+        client.set_auth_type(AuthType::RequestBody);
+    }
     client.set_client_secret(client_params.secret.clone());
     client.set_redirect_url(Url::parse(&redirect_url).expect("Invalid redirect URL"));
     // Set up the config for the Github OAuth2 process.
@@ -309,7 +314,7 @@ async fn connect(
 struct CreateAccount {
     client: String,
     owner: String,
-    refresh_token: String,
+    refresh_token: Option<String>,
     expires_in: i64,
 }
 async fn create_account(
@@ -987,6 +992,7 @@ async fn exchange_code<T: DeserializeOwned>(
             token_url = token_url.param(key, value)
         }
     }
+
     token_url
         .with_client(http_client)
         .execute::<T>()
diff --git a/frontend/src/lib/components/AppConnect.svelte b/frontend/src/lib/components/AppConnect.svelte
index 403fe8c4a7..adc1c39454 100644
--- a/frontend/src/lib/components/AppConnect.svelte
+++ b/frontend/src/lib/components/AppConnect.svelte
@@ -170,13 +170,13 @@
 			}
 
 			let account: number | undefined = undefined
-			if (valueToken?.refresh_token != undefined && valueToken?.expires_in != undefined) {
+			if (valueToken?.refresh_token != undefined || valueToken?.expires_in != undefined) {
 				account = Number(
 					await OauthService.createAccount({
 						workspace: $workspaceStore!,
 						requestBody: {
-							refresh_token: valueToken.refresh_token!,
-							expires_in: valueToken.expires_in!,
+							refresh_token: valueToken.refresh_token,
+							expires_in: valueToken.expires_in,
 							owner: path.split('/').slice(0, 2).join('/'),
 							client: resource_type
 						}