D:\python_dome\django\myblog>python manage.py runserver 999
Performing system checks...
System check identified no issues (0 silenced).
You have 13 unapplied migration(s). Your project may not work properly until you apply the migrations for app(s): admin, auth, contenttypes, sessions.
Run 'python manage.py migrate' to apply them.
August 22, 2017 - 11:18:52
Django version 1.11.4, using settings 'myblog.settings'
Starting development server at http://127.0.0.1:999/
Quit the server with CTRL-BREAK.
Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x05F93420>
Traceback (most recent call last):
File "C:\Program Files (x86)\Python36-32\lib\site-packages\django\utils\autoreload.py", line 228, in wrapper
fn(*args, **kwargs)
File "C:\Program Files (x86)\Python36-32\lib\site-packages\django\core\management\commands\runserver.py", line 149, in inner_run
ipv6=self.use_ipv6, threading=threading, server_cls=self.server_cls)
File "C:\Program Files (x86)\Python36-32\lib\site-packages\django\core\servers\basehttp.py", line 164, in run
httpd = httpd_cls(server_address, WSGIRequestHandler, ipv6=ipv6)
File "C:\Program Files (x86)\Python36-32\lib\site-packages\django\core\servers\basehttp.py", line 74, in __init__
super(WSGIServer, self).__init__(*args, **kwargs)
File "C:\Program Files (x86)\Python36-32\lib\socketserver.py", line 453, in __init__
self.server_bind()
File "C:\Program Files (x86)\Python36-32\lib\wsgiref\simple_server.py", line 50, in server_bind
HTTPServer.server_bind(self)
File "C:\Program Files (x86)\Python36-32\lib\http\server.py", line 138, in server_bind
self.server_name = socket.getfqdn(host)
File "C:\Program Files (x86)\Python36-32\lib\socket.py", line 673, in getfqdn
hostname, aliases, ipaddrs = gethostbyaddr(name)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xcd in position 2: invalid continuation byte
机器是64位 win10

你计算机名称是中文吧 改成英文就好了

settings.py里面有中文？包括注释，去掉试一下

升楼主问题解决了吗 我今天刚发现这个问题不知道该怎么办 刚开始服务器是能启动了的

我的和你的一样的错误，都改了，为什么还是不行

UnicodeDecodeError: 'utf-8' codec can't decode byte 0xcd in position 2: invalid continuation byte
应该是你在某个文件中写了中文。包括注释如果有中文在开头要 加 # -*- coding: utf-8 -*-

是中文编码的问题