All of the error codes are listed in TurboActivate.h. So, 13 is 0xD in hexadecimal. Look in TurboActivate.h for an explanation of what that means by scrolling down to the error code 0xD:
/* MessageId: TA_E_EXPIRED
MessageText:
The activation has expired or the system time has been tampered with. Ensure your time, timezone, and date settings are correct.*/#define TA_E_EXPIRED ((HRESULT)0x0000000DL)