ERR_CONNECTION_RESET in Xampp, PHP 5.6

My configuration is:
Win 10, 64 bit
Xampp 32 bit, Apache/2.4.17 (Win32) OpenSSL/1.0.2d PHP/5.6.14
Couchbase Server 4.0 ,PHP 5.6 VC11 ZTS - x86

PHP error log does not show error messages.