diff --git a/app/src/main/java/uci/localproxy/proxyscreen/ProxyContract.java b/app/src/main/java/uci/localproxy/proxyscreen/ProxyContract.java
index ae56972..4cc56c2 100755
--- a/app/src/main/java/uci/localproxy/proxyscreen/ProxyContract.java
+++ b/app/src/main/java/uci/localproxy/proxyscreen/ProxyContract.java
@@ -25,6 +25,8 @@ void startProxyFromHelpDialog(@NonNull String user, @NonNull String pass, @NonNu
                                      @NonNull String localPort, @NonNull boolean rememberPass,
                                      @NonNull boolean setGlobalProxy, @NonNull boolean dontShowAgain);
 
+        void stopCredentialCheckTask();
+
         void stopProxy();
 
         void onDestroy();
diff --git a/app/src/main/java/uci/localproxy/proxyscreen/ProxyFragment.java b/app/src/main/java/uci/localproxy/proxyscreen/ProxyFragment.java
index fb5c8cd..5335a7b 100755
--- a/app/src/main/java/uci/localproxy/proxyscreen/ProxyFragment.java
+++ b/app/src/main/java/uci/localproxy/proxyscreen/ProxyFragment.java
@@ -407,10 +407,16 @@ public void startWifiConfActivity() {
     public void showProgressDialog(boolean show) {
         if (show) {
             mProgressDialog.setMessage(getString(R.string.proxy_credentials_check_message));
-            mProgressDialog.setCancelable(false);
+            mProgressDialog.setOnDismissListener(new DialogInterface.OnDismissListener() {
+                @Override
+                public void onDismiss(DialogInterface dialogInterface) {
+                    mPresenter.stopCredentialCheckTask();
+                }
+            });
             mProgressDialog.show();
         }
         else {
+            mProgressDialog.setOnDismissListener(null);
             mProgressDialog.dismiss();
         }
     }
diff --git a/app/src/main/java/uci/localproxy/proxyscreen/ProxyPresenter.java b/app/src/main/java/uci/localproxy/proxyscreen/ProxyPresenter.java
index ddb5ae7..08d86ac 100755
--- a/app/src/main/java/uci/localproxy/proxyscreen/ProxyPresenter.java
+++ b/app/src/main/java/uci/localproxy/proxyscreen/ProxyPresenter.java
@@ -65,6 +65,8 @@ public class ProxyPresenter implements ProxyContract.Presenter {
     @NonNull
     private AppPreferencesHelper mPrefHelper;
 
+    private CredentialsCheckTask credentialsCheckTask;
+
 
     public ProxyPresenter(@NonNull ProxyContract.View proxyView,
                           @NonNull AppPreferencesHelper prefHelper) {
@@ -137,7 +139,7 @@ public void onProfileLoaded(Profile profile) {
                     user = username.substring(backSlashPos + 1, username.length());
                 }
 
-                CredentialsCheckTask task = new CredentialsCheckTask(
+                credentialsCheckTask = new CredentialsCheckTask(
                         user,
                         password,
                         profile.getHost(),
@@ -148,7 +150,7 @@ public void onProfileLoaded(Profile profile) {
                         setGlobalProxy
                 );
 
-                task.execute();
+                credentialsCheckTask.execute();
 
             }
 
@@ -159,6 +161,13 @@ public void onDataNoAvailable() {
         });
     }
 
+    @Override
+    public void stopCredentialCheckTask() {
+        if (credentialsCheckTask != null){
+            credentialsCheckTask.cancel(true);
+        }
+    }
+
     @Override
     public void stopProxy() {
         mProxyView.stopProxyService();