diff --git a/tests/phpunit/includes/abstract-testcase.php b/tests/phpunit/includes/abstract-testcase.php
index 5b080fc7ceb9f..64a57e0d9dba3 100644
--- a/tests/phpunit/includes/abstract-testcase.php
+++ b/tests/phpunit/includes/abstract-testcase.php
@@ -1864,4 +1864,18 @@ private function retry_on_error( callable $callback, $url, $args ) {
 
 		return $result;
 	}
+
+	/**
+	 * Clean up the unzip destination.
+	 *
+	 * @since 6.9.0
+	 *
+	 * @param string $unzip_destination Unzip destination.
+	 */
+	public function clean_up_unzip_destination( $unzip_destination ) {
+		if ( file_exists( $unzip_destination ) ) {
+			$this->rmdir( $unzip_destination );
+			$this->delete_folders( $unzip_destination );
+		}
+	}
 }
diff --git a/tests/phpunit/tests/filesystem/unzipFilePclzip.php b/tests/phpunit/tests/filesystem/unzipFilePclzip.php
index 5a195417febb9..4bd459ebf13aa 100644
--- a/tests/phpunit/tests/filesystem/unzipFilePclzip.php
+++ b/tests/phpunit/tests/filesystem/unzipFilePclzip.php
@@ -41,13 +41,13 @@ public function test_should_apply_pre_unzip_file_filters() {
 
 		// Prepare test environment.
 		$unzip_destination = self::$test_data_dir . 'archive/';
+		$this->clean_up_unzip_destination( $unzip_destination ); // See #63443 for details.
 		mkdir( $unzip_destination );
 
 		_unzip_file_pclzip( self::$test_data_dir . 'archive.zip', $unzip_destination );
 
 		// Cleanup test environment.
-		$this->rmdir( $unzip_destination );
-		$this->delete_folders( $unzip_destination );
+		$this->clean_up_unzip_destination( $unzip_destination );
 
 		$this->assertSame( 1, $filter->get_call_count() );
 	}
@@ -63,13 +63,13 @@ public function test_should_apply_unzip_file_filters() {
 
 		// Prepare test environment.
 		$unzip_destination = self::$test_data_dir . 'archive/';
+		$this->clean_up_unzip_destination( $unzip_destination ); // See #63443 for details.
 		mkdir( $unzip_destination );
 
 		_unzip_file_pclzip( self::$test_data_dir . 'archive.zip', $unzip_destination );
 
 		// Cleanup test environment.
-		$this->rmdir( $unzip_destination );
-		$this->delete_folders( $unzip_destination );
+		$this->clean_up_unzip_destination( $unzip_destination );
 
 		$this->assertSame( 1, $filter->get_call_count() );
 	}
diff --git a/tests/phpunit/tests/filesystem/unzipFileZiparchive.php b/tests/phpunit/tests/filesystem/unzipFileZiparchive.php
index 53cabd945439e..ce4cfd0ad4281 100644
--- a/tests/phpunit/tests/filesystem/unzipFileZiparchive.php
+++ b/tests/phpunit/tests/filesystem/unzipFileZiparchive.php
@@ -45,13 +45,13 @@ public function test_should_apply_pre_unzip_file_filters() {
 
 		// Prepare test environment.
 		$unzip_destination = self::$test_data_dir . 'archive/';
+		$this->clean_up_unzip_destination( $unzip_destination ); // See #63443 for details.
 		mkdir( $unzip_destination );
 
 		_unzip_file_ziparchive( self::$test_data_dir . 'archive.zip', $unzip_destination );
 
 		// Cleanup test environment.
-		$this->rmdir( $unzip_destination );
-		$this->delete_folders( $unzip_destination );
+		$this->clean_up_unzip_destination( $unzip_destination );
 
 		$this->assertSame( 1, $filter->get_call_count() );
 	}
@@ -71,13 +71,13 @@ public function test_should_apply_unzip_file_filters() {
 
 		// Prepare test environment.
 		$unzip_destination = self::$test_data_dir . 'archive/';
+		$this->clean_up_unzip_destination( $unzip_destination ); // See #65443 for details.
 		mkdir( $unzip_destination );
 
 		_unzip_file_ziparchive( self::$test_data_dir . 'archive.zip', $unzip_destination );
 
 		// Cleanup test environment.
-		$this->rmdir( $unzip_destination );
-		$this->delete_folders( $unzip_destination );
+		$this->clean_up_unzip_destination( $unzip_destination );
 
 		$this->assertSame( 1, $filter->get_call_count() );
 	}