diff --git a/fetchupd.php b/fetchupd.php
index ac9165f..bc9fc46 100644
--- a/fetchupd.php
+++ b/fetchupd.php
@@ -122,7 +122,7 @@ function uupFetchUpd(
     consoleLogger('Fetching information from the server...');
     $composerArgs = [$arch, $flight, $ring, $build, $sku, $type, $flags];
     $out = sendWuPostRequestHelper('client', 'composeFetchUpdRequest', $composerArgs);
-    if($out['error'] != 200) {
+    if($out === false || $out['error'] != 200) {
         consoleLogger('The request has failed');
         return array('error' => 'WU_REQUEST_FAILED');
     }
diff --git a/get.php b/get.php
index 5a0c6f7..97f2d3a 100644
--- a/get.php
+++ b/get.php
@@ -399,7 +399,7 @@ function uupGetOnlineFiles($updateId, $rev, $info, $cacheRequests, $type) {
         $composerArgs = [$updateId, $info, $rev, $type];
         $out = sendWuPostRequestHelper('clientSecured', 'composeFileGetRequest', $composerArgs);
 
-        if($out['error'] != 200) {
+        if($out === false || $out['error'] != 200) {
             consoleLogger('The request has failed');
             return array('error' => 'WU_REQUEST_FAILED');
         }
diff --git a/shared/auths.php b/shared/auths.php
index c1a154f..6fbb4f6 100644
--- a/shared/auths.php
+++ b/shared/auths.php
@@ -60,6 +60,9 @@ function uupEncryptedData() {
 
     if(empty($cookieInfo)) {
         $data = sendWuPostRequestHelper('client', 'composeGetCookieRequest', [], false);
+        if($data === false || $data['error'] != 200) 
+            return false;
+
         $cookieInfo = uupSaveCookieFromResponse($data['out']);
     }
 
diff --git a/shared/main.php b/shared/main.php
index 5157b01..3707724 100644
--- a/shared/main.php
+++ b/shared/main.php
@@ -16,7 +16,7 @@ limitations under the License.
 */
 
 function uupApiVersion() {
-    return '1.43.1';
+    return '1.43.2';
 }
 
 require_once dirname(__FILE__).'/auths.php';
diff --git a/shared/requests.php b/shared/requests.php
index 94148c6..c90e134 100644
--- a/shared/requests.php
+++ b/shared/requests.php
@@ -362,8 +362,11 @@ XML;
 
 // Composes POST data for fetching the latest update information from Windows Update
 function composeFetchUpdRequest($arch, $flight, $ring, $build, $sku = 48, $type = 'Production', $flags = []) {
-    $device = uupDevice();
     $encData = uupEncryptedData();
+    if($encData === false)
+        return false;
+
+    $device = uupDevice();
     $uuid = genUUID();
 
     $createdTime = time();
diff --git a/shared/utils.php b/shared/utils.php
index 5707c38..f406d76 100644
--- a/shared/utils.php
+++ b/shared/utils.php
@@ -102,6 +102,9 @@ function sendWuPostRequestHelper(
     ];
 
     $postData = call_user_func_array($postComposer, $postComposerArgs);
+    if($postData === false)
+        return false;
+
     $data = sendWuPostRequestInternal($endpoints[$endpoint], $postData, $saveCookie);
 
     if($data['error'] == 500 && preg_match('/<ErrorCode>(ConfigChanged|CookieExpired|InvalidCookie)<\/ErrorCode>/', $data['out'])) {