diff --git a/crates/hyperswitch_connectors/src/connectors/shift4.rs b/crates/hyperswitch_connectors/src/connectors/shift4.rs
index 3af15de507..01b23f61e5 100644
--- a/crates/hyperswitch_connectors/src/connectors/shift4.rs
+++ b/crates/hyperswitch_connectors/src/connectors/shift4.rs
@@ -2,6 +2,7 @@ pub mod transformers;
 use std::sync::LazyLock;
 
 use api_models::webhooks::IncomingWebhookEvent;
+use base64::Engine;
 use common_enums::enums;
 use common_utils::{
     errors::CustomResult,
@@ -46,7 +47,7 @@ use hyperswitch_interfaces::{
     types::{self, Response},
     webhooks::{IncomingWebhook, IncomingWebhookRequestDetails},
 };
-use masking::Mask;
+use masking::{Mask, PeekInterface};
 use transformers::{self as shift4, Shift4PaymentsRequest, Shift4RefundRequest};
 
 use crate::{
@@ -111,9 +112,13 @@ impl ConnectorCommon for Shift4 {
     ) -> CustomResult<Vec<(String, masking::Maskable<String>)>, errors::ConnectorError> {
         let auth = shift4::Shift4AuthType::try_from(auth_type)
             .change_context(errors::ConnectorError::FailedToObtainAuthType)?;
+        let api_key = format!(
+            "Basic {}",
+            common_utils::consts::BASE64_ENGINE.encode(format!("{}:", auth.api_key.peek()))
+        );
         Ok(vec![(
             headers::AUTHORIZATION.to_string(),
-            auth.api_key.into_masked(),
+            api_key.into_masked(),
         )])
     }
 
@@ -277,7 +282,19 @@ impl ConnectorIntegration<Authorize, PaymentsAuthorizeData, PaymentsResponseData
     }
 }
 
-impl ConnectorIntegration<Void, PaymentsCancelData, PaymentsResponseData> for Shift4 {}
+impl ConnectorIntegration<Void, PaymentsCancelData, PaymentsResponseData> for Shift4 {
+    fn build_request(
+        &self,
+        _req: &hyperswitch_domain_models::types::PaymentsCancelRouterData,
+        _connectors: &Connectors,
+    ) -> CustomResult<Option<Request>, errors::ConnectorError> {
+        Err(errors::ConnectorError::NotSupported {
+            message: "Void".to_string(),
+            connector: "Shift4",
+        }
+        .into())
+    }
+}
 
 impl ConnectorIntegration<PSync, PaymentsSyncData, PaymentsResponseData> for Shift4 {
     fn get_headers(
@@ -373,6 +390,12 @@ impl ConnectorIntegration<Capture, PaymentsCaptureData, PaymentsResponseData> fo
         req: &PaymentsCaptureRouterData,
         connectors: &Connectors,
     ) -> CustomResult<Option<Request>, errors::ConnectorError> {
+        if req.request.amount_to_capture != req.request.payment_amount {
+            Err(errors::ConnectorError::NotSupported {
+                message: "Partial Capture".to_string(),
+                connector: "Shift4",
+            })?
+        }
         Ok(Some(
             RequestBuilder::new()
                 .method(Method::Post)
@@ -488,7 +511,7 @@ impl ConnectorIntegration<PreProcessing, PaymentsPreProcessingData, PaymentsResp
         )?;
         let connector_router_data = shift4::Shift4RouterData::try_from((amount, req))?;
         let connector_req = Shift4PaymentsRequest::try_from(&connector_router_data)?;
-        Ok(RequestContent::Json(Box::new(connector_req)))
+        Ok(RequestContent::FormUrlEncoded(Box::new(connector_req)))
     }
 
     fn build_request(
diff --git a/cypress-tests/cypress/e2e/configs/Payment/Shift4.js b/cypress-tests/cypress/e2e/configs/Payment/Shift4.js
index 82d1e70ecc..2b80bf8b5e 100644
--- a/cypress-tests/cypress/e2e/configs/Payment/Shift4.js
+++ b/cypress-tests/cypress/e2e/configs/Payment/Shift4.js
@@ -33,7 +33,7 @@ const successfulNo3DSCardDetails = {
 
 const successfulThreeDSTestCardDetails = {
   ...successfulNo3DSCardDetails,
-  card_number: "4000000000003063", // Using standard test card with authentication_type: "three_ds"
+  card_number: "4012001800000016", // Using standard test card with authentication_type: "three_ds"
 };
 
 const failedNo3DSCardDetails = {
@@ -43,11 +43,11 @@ const failedNo3DSCardDetails = {
 
 const payment_method_data_3ds = {
   card: {
-    last4: "3063",
+    last4: "0016",
     card_type: "DEBIT",
     card_network: "Visa",
-    card_issuer: "STRIPE PAYMENTS UK LIMITED",
-    card_issuing_country: "UNITEDKINGDOM",
+    card_issuer: "VISA PRODUCTION SUPPORT CLIENT BID 1",
+    card_issuing_country: "UNITEDSTATES",
     card_isin: "401200",
     card_extended_bin: null,
     card_exp_month: "10",
@@ -267,6 +267,9 @@ export const connectorDetails = {
       },
     },
     PartialCapture: {
+      Configs: {
+        TRIGGER_SKIP: true, // Partial Capture is not supported in Shift4
+      },
       Request: {
         amount_to_capture: 2000,
       },