由于权限被拒绝，无法绑定到某些端口

在过去的3个月左右，我有随机错误，我不能绑定一个特定的端口，我们的身份服务器运行在我的本地开发工作站。一开始我以为是我的机器坏了，所以我重置了所有东西，这样问题就解决了两个月，现在又回来了。

与此同时，其他开发商也看到了同样的问题。我们所有经历过这个问题的人都在运行 Windows10，但不是每个使用 Windows10的人都有这个问题。

用 shutdown /s /f /t 0关闭窗口后重新启动窗口是再次打开端口的唯一可靠解决方案。当我重新启动正常(由于窗口更新或类似)的问题再次出现，我需要关闭窗口与该命令。

我编写了一个小的 f # 脚本来测试哪些端口受到了影响

试图以访问权限禁止的方式访问套接字

当我寻找它时，建议的解决方案在哪里重新启动机器，但这似乎更像是一个工作，而不是一个真正的解决方案。我还找到了 https://stackoverflow.com/a/10461978/621366-但是 netstat -o没有列出端口，工具 TCPView 也没有。我们都很确定港口没有被任何东西占领。我还尝试在管理员控制台中运行 netstat，在 bash on windows 中运行类似的命令，但是什么也找不到。我甚至不能通过 telnet 连接到端口，它说端口上没有监听。

这些港口包括:

  • 49670-49689
  • 49710-49749
  • 49760-49779
  • 49811-49830
  • 49843-49882
  • 50197-50216

除了 windows 10默认的 Windows 防火墙之外，我们都没有修改任何东西，也没有安装任何额外的防病毒工具。所以一切都应该是默认值。在第一次破裂之前正常工作约10个月，之后2个月。在这两种情况下，后一些窗口更新的地方安装。上次它是一个 bios 更新(可能是由于熔毁/幽灵问题?).

另外，尝试显式地打开防火墙上的端口也没有帮助。

根据这个答案，https://stackoverflow.com/a/23982901/621366 TCPView 和 netstat 不应该错过任何被占用的端口，但是即使我在 TCPView 中启用显示未连接的端点，我也没有看到任何端口在尝试绑定它们时被拒绝。这里有一个来自占用端口的屏幕(我标记了占用端口的边界，它位于许可拒绝端口组之前或之后)

enter image description here

更新:

我注意到似乎总是有160或180个(确切数字)的端口在40,000以上的范围内被拒绝许可，这对我来说似乎是奇怪的巧合，所以显然有什么东西在故意占领这些端口，但是是什么呢？我似乎在 Windows 事件日志中找不到任何东西(尽管我不知道到底要查找什么) ，而且这些端口都没有显示任何我的防火墙规则。关闭 windows 的 docker 也没有任何区别，当一个同事提到，对他们来说，重新启动 windows 的 docker 就足够了(在用户界面中，点击重置-> 重启) ，现在对我来说，即使重新启动关闭命令也不再起作用。

更新2:

netstat -ano的输出从管理员 powershell 运行:

Proto  Local Address          Foreign Address        State           PID
TCP    0.0.0.0:135            0.0.0.0:0              LISTENING       1152
TCP    0.0.0.0:445            0.0.0.0:0              LISTENING       4
TCP    0.0.0.0:2179           0.0.0.0:0              LISTENING       4696
TCP    0.0.0.0:5040           0.0.0.0:0              LISTENING       6616
TCP    0.0.0.0:5357           0.0.0.0:0              LISTENING       4
TCP    0.0.0.0:5432           0.0.0.0:0              LISTENING       11100
TCP    0.0.0.0:7680           0.0.0.0:0              LISTENING       7056
TCP    0.0.0.0:17500          0.0.0.0:0              LISTENING       9668
TCP    0.0.0.0:49664          0.0.0.0:0              LISTENING       784
TCP    0.0.0.0:49665          0.0.0.0:0              LISTENING       1628
TCP    0.0.0.0:49666          0.0.0.0:0              LISTENING       2028
TCP    0.0.0.0:49667          0.0.0.0:0              LISTENING       3560
TCP    0.0.0.0:49800          0.0.0.0:0              LISTENING       856
TCP    0.0.0.0:49821          0.0.0.0:0              LISTENING       892
TCP    0.0.0.0:50000          0.0.0.0:0              LISTENING       11100
TCP    0.0.0.0:50001          0.0.0.0:0              LISTENING       11100
TCP    0.0.0.0:51000          0.0.0.0:0              LISTENING       11100
TCP    10.0.75.1:139          0.0.0.0:0              LISTENING       4
TCP    10.0.75.1:445          10.0.75.2:44848        ESTABLISHED     4
TCP    127.0.0.1:843          0.0.0.0:0              LISTENING       9668
TCP    127.0.0.1:944          0.0.0.0:0              LISTENING       688
TCP    127.0.0.1:944          127.0.0.1:50968        TIME_WAIT       0
TCP    127.0.0.1:944          127.0.0.1:50970        TIME_WAIT       0
TCP    127.0.0.1:944          127.0.0.1:50973        TIME_WAIT       0
TCP    127.0.0.1:944          127.0.0.1:50977        TIME_WAIT       0
TCP    127.0.0.1:944          127.0.0.1:50981        TIME_WAIT       0
TCP    127.0.0.1:944          127.0.0.1:50990        TIME_WAIT       0
TCP    127.0.0.1:944          127.0.0.1:50992        TIME_WAIT       0
TCP    127.0.0.1:944          127.0.0.1:50996        TIME_WAIT       0
TCP    127.0.0.1:944          127.0.0.1:51005        TIME_WAIT       0
TCP    127.0.0.1:944          127.0.0.1:51007        TIME_WAIT       0
TCP    127.0.0.1:944          127.0.0.1:51009        TIME_WAIT       0
TCP    127.0.0.1:944          127.0.0.1:51015        TIME_WAIT       0
TCP    127.0.0.1:944          127.0.0.1:51017        ESTABLISHED     688
TCP    127.0.0.1:4380         0.0.0.0:0              LISTENING       11024
TCP    127.0.0.1:6942         0.0.0.0:0              LISTENING       9296
TCP    127.0.0.1:17600        0.0.0.0:0              LISTENING       9668
TCP    127.0.0.1:49668        127.0.0.1:49669        ESTABLISHED     688
TCP    127.0.0.1:49669        127.0.0.1:49668        ESTABLISHED     688
TCP    127.0.0.1:50076        127.0.0.1:50077        ESTABLISHED     8828
TCP    127.0.0.1:50077        127.0.0.1:50076        ESTABLISHED     8828
TCP    127.0.0.1:50173        127.0.0.1:50174        ESTABLISHED     9668
TCP    127.0.0.1:50174        127.0.0.1:50173        ESTABLISHED     9668
TCP    127.0.0.1:50175        127.0.0.1:50176        ESTABLISHED     9668
TCP    127.0.0.1:50176        127.0.0.1:50175        ESTABLISHED     9668
TCP    127.0.0.1:50197        127.0.0.1:50198        ESTABLISHED     9668
TCP    127.0.0.1:50198        127.0.0.1:50197        ESTABLISHED     9668
TCP    127.0.0.1:50335        127.0.0.1:50336        ESTABLISHED     6424
TCP    127.0.0.1:50336        127.0.0.1:50335        ESTABLISHED     6424
TCP    127.0.0.1:50346        127.0.0.1:50347        ESTABLISHED     11100
TCP    127.0.0.1:50347        127.0.0.1:50346        ESTABLISHED     11100
TCP    127.0.0.1:51011        127.0.0.1:51012        ESTABLISHED     9296
TCP    127.0.0.1:51012        127.0.0.1:51011        ESTABLISHED     9296
TCP    127.0.0.1:51013        127.0.0.1:51014        ESTABLISHED     9296
TCP    127.0.0.1:51014        127.0.0.1:51013        ESTABLISHED     9296
TCP    127.0.0.1:51016        0.0.0.0:0              LISTENING       9296
TCP    127.0.0.1:51017        127.0.0.1:944          ESTABLISHED     8828
TCP    127.0.0.1:63342        0.0.0.0:0              LISTENING       9296
TCP    127.94.0.1:946         0.0.0.0:0              LISTENING       688
TCP    127.94.0.2:946         0.0.0.0:0              LISTENING       688
TCP    127.94.0.3:946         0.0.0.0:0              LISTENING       688
TCP    127.94.0.4:946         0.0.0.0:0              LISTENING       688
TCP    169.254.105.83:139     0.0.0.0:0              LISTENING       4
TCP    192.168.0.107:139      0.0.0.0:0              LISTENING       4
TCP    192.168.0.107:49415    111.221.29.134:443     ESTABLISHED     4316
TCP    192.168.0.107:49417    111.221.29.127:443     ESTABLISHED     4316
TCP    192.168.0.107:50185    162.125.66.3:443       CLOSE_WAIT      9668
TCP    192.168.0.107:50246    52.70.31.26:443        CLOSE_WAIT      9668
TCP    192.168.0.107:50253    35.177.204.73:443      ESTABLISHED     2804
TCP    192.168.0.107:50254    35.177.204.73:443      ESTABLISHED     2804
TCP    192.168.0.107:50256    35.177.204.73:443      ESTABLISHED     2804
TCP    192.168.0.107:50257    158.85.224.175:443     ESTABLISHED     10836
TCP    192.168.0.107:50258    13.69.14.160:443       ESTABLISHED     8620
TCP    192.168.0.107:50310    66.102.1.188:443       ESTABLISHED     11184
TCP    192.168.0.107:50329    157.240.20.15:443      ESTABLISHED     10836
TCP    192.168.0.107:50331    111.221.29.74:443      ESTABLISHED     10072
TCP    192.168.0.107:50332    162.125.18.133:443     ESTABLISHED     9668
TCP    192.168.0.107:50351    40.77.226.194:443      ESTABLISHED     8620
TCP    192.168.0.107:50460    66.102.1.189:443       ESTABLISHED     10836
TCP    192.168.0.107:50470    66.102.1.189:443       ESTABLISHED     10836
TCP    192.168.0.107:50501    192.30.253.125:443     ESTABLISHED     11184
TCP    192.168.0.107:50513    40.77.226.194:443      ESTABLISHED     8620
TCP    192.168.0.107:50529    87.98.218.198:443      ESTABLISHED     12540
TCP    192.168.0.107:50530    172.217.21.46:443      ESTABLISHED     10836
TCP    192.168.0.107:50616    172.217.21.46:443      ESTABLISHED     10836
TCP    192.168.0.107:50630    162.125.18.133:443     ESTABLISHED     9668
TCP    192.168.0.107:50641    172.217.21.37:443      ESTABLISHED     10836
TCP    192.168.0.107:50645    162.125.66.4:443       CLOSE_WAIT      9668
TCP    192.168.0.107:50668    87.98.218.198:443      ESTABLISHED     12540
TCP    192.168.0.107:50703    151.101.0.133:443      ESTABLISHED     11184
TCP    192.168.0.107:50709    192.30.253.125:443     ESTABLISHED     11184
TCP    192.168.0.107:50744    87.98.218.198:443      ESTABLISHED     12540
TCP    192.168.0.107:50828    162.125.66.3:443       CLOSE_WAIT      9668
TCP    192.168.0.107:50830    151.101.0.133:443      ESTABLISHED     11184
TCP    192.168.0.107:50831    151.101.0.133:443      ESTABLISHED     11184
TCP    192.168.0.107:50832    151.101.0.133:443      ESTABLISHED     11184
TCP    192.168.0.107:50834    151.101.0.133:443      ESTABLISHED     11184
TCP    192.168.0.107:50835    151.101.0.133:443      ESTABLISHED     11184
TCP    192.168.0.107:50836    151.101.0.133:443      ESTABLISHED     11184
TCP    192.168.0.107:50837    151.101.0.133:443      ESTABLISHED     11184
TCP    192.168.0.107:50839    192.30.253.125:443     ESTABLISHED     11184
TCP    192.168.0.107:50844    151.101.0.133:443      ESTABLISHED     11184
TCP    192.168.0.107:50847    192.30.253.124:443     ESTABLISHED     11184
TCP    192.168.0.107:50857    192.30.253.124:443     ESTABLISHED     11184
TCP    192.168.0.107:50863    162.125.34.137:443     CLOSE_WAIT      9668
TCP    192.168.0.107:50865    172.217.21.46:443      TIME_WAIT       0
TCP    192.168.0.107:50866    172.217.21.46:443      ESTABLISHED     10836
TCP    192.168.0.107:50910    35.186.213.138:443     TIME_WAIT       0
TCP    192.168.0.107:50923    172.217.21.46:443      ESTABLISHED     10836
TCP    192.168.0.107:50925    40.117.190.72:443      ESTABLISHED     4040
TCP    192.168.0.107:50927    172.217.21.42:443      ESTABLISHED     11184
TCP    192.168.0.107:50949    151.101.0.133:443      ESTABLISHED     11184
TCP    192.168.0.107:50950    151.101.0.133:443      ESTABLISHED     11184
TCP    192.168.0.107:50951    151.101.0.133:443      ESTABLISHED     11184
TCP    192.168.0.107:50954    192.30.253.124:443     ESTABLISHED     11184
TCP    192.168.0.107:50959    40.117.190.72:443      TIME_WAIT       0
TCP    192.168.0.107:50969    192.30.253.113:22      TIME_WAIT       0
TCP    192.168.0.107:50978    87.98.218.198:443      ESTABLISHED     12540
TCP    192.168.0.107:50984    151.101.1.69:443       ESTABLISHED     11184
TCP    192.168.0.107:50985    192.0.73.2:443         ESTABLISHED     11184
TCP    192.168.0.107:50986    104.16.112.18:443      ESTABLISHED     11184
TCP    192.168.0.107:50991    198.252.206.25:443     ESTABLISHED     11184
TCP    192.168.0.107:50993    192.168.0.10:3910      TIME_WAIT       0
TCP    192.168.0.107:50994    192.168.0.10:3910      TIME_WAIT       0
TCP    192.168.0.107:50997    23.210.254.37:443      ESTABLISHED     912
TCP    192.168.0.107:50998    23.210.254.37:443      ESTABLISHED     912
TCP    192.168.0.107:50999    23.210.254.37:443      ESTABLISHED     912
TCP    192.168.0.107:51001    23.210.254.37:443      ESTABLISHED     912
TCP    192.168.0.107:51006    40.117.190.72:443      ESTABLISHED     11992
TCP    192.168.0.107:51008    40.69.218.62:443       ESTABLISHED     7056
TCP    192.168.0.107:51010    172.217.21.46:443      ESTABLISHED     11184
TCP    [::]:135               [::]:0                 LISTENING       1152
TCP    [::]:445               [::]:0                 LISTENING       4
TCP    [::]:2179              [::]:0                 LISTENING       4696
TCP    [::]:5357              [::]:0                 LISTENING       4
TCP    [::]:7680              [::]:0                 LISTENING       7056
TCP    [::]:17500             [::]:0                 LISTENING       9668
TCP    [::]:49664             [::]:0                 LISTENING       784
TCP    [::]:49665             [::]:0                 LISTENING       1628
TCP    [::]:49666             [::]:0                 LISTENING       2028
TCP    [::]:49667             [::]:0                 LISTENING       3560
TCP    [::]:49800             [::]:0                 LISTENING       856
TCP    [::]:49821             [::]:0                 LISTENING       892
TCP    [::1]:5432             [::]:0                 LISTENING       11100
TCP    [::1]:50000            [::]:0                 LISTENING       11100
TCP    [::1]:50001            [::]:0                 LISTENING       11100
TCP    [::1]:51000            [::]:0                 LISTENING       11100
UDP    0.0.0.0:53             *:*                                    5620
UDP    0.0.0.0:3702           *:*                                    2084
UDP    0.0.0.0:3702           *:*                                    2084
UDP    0.0.0.0:5050           *:*                                    6616
UDP    0.0.0.0:5353           *:*                                    11184
UDP    0.0.0.0:5353           *:*                                    11184
UDP    0.0.0.0:5353           *:*                                    11184
UDP    0.0.0.0:5353           *:*                                    3080
UDP    0.0.0.0:5353           *:*                                    11184
UDP    0.0.0.0:5353           *:*                                    11184
UDP    0.0.0.0:5353           *:*                                    11184
UDP    0.0.0.0:5353           *:*                                    11184
UDP    0.0.0.0:5355           *:*                                    3080
UDP    0.0.0.0:17500          *:*                                    9668
UDP    0.0.0.0:49670          *:*                                    2084
UDP    0.0.0.0:57329          *:*                                    5620
UDP    0.0.0.0:57330          *:*                                    5620
UDP    0.0.0.0:59529          *:*                                    8620
UDP    0.0.0.0:60605          *:*                                    11184
UDP    10.0.75.1:137          *:*                                    4
UDP    10.0.75.1:138          *:*                                    4
UDP    10.0.75.1:1900         *:*                                    2620
UDP    10.0.75.1:61326        *:*                                    2620
UDP    127.0.0.1:1900         *:*                                    2620
UDP    127.0.0.1:60816        *:*                                    4616
UDP    127.0.0.1:61328        *:*                                    2620
UDP    169.254.105.83:137     *:*                                    4
UDP    169.254.105.83:138     *:*                                    4
UDP    169.254.105.83:1900    *:*                                    2620
UDP    169.254.105.83:61330   *:*                                    2620
UDP    172.30.146.241:67      *:*                                    5620
UDP    172.30.146.241:68      *:*                                    5620
UDP    172.30.146.241:1900    *:*                                    2620
UDP    172.30.146.241:61329   *:*                                    2620
UDP    192.168.0.107:137      *:*                                    4
UDP    192.168.0.107:138      *:*                                    4
UDP    192.168.0.107:1900     *:*                                    2620
UDP    192.168.0.107:61327    *:*                                    2620
UDP    [::]:3702              *:*                                    2084
UDP    [::]:3702              *:*                                    2084
UDP    [::]:5353              *:*                                    11184
UDP    [::]:5353              *:*                                    11184
UDP    [::]:5353              *:*                                    3080
UDP    [::]:5353              *:*                                    11184
UDP    [::]:5355              *:*                                    3080
UDP    [::]:49671             *:*                                    2084
UDP    [::]:57331             *:*                                    5620
UDP    [::]:59529             *:*                                    8620
UDP    [::1]:1900             *:*                                    2620
UDP    [::1]:61323            *:*                                    2620
UDP    [fe80::30eb:ad8f:f94a:b774%26]:1900  *:*                                    2620
UDP    [fe80::30eb:ad8f:f94a:b774%26]:61324  *:*                                    2620
UDP    [fe80::718c:22bb:fd97:c06c%23]:1900  *:*                                    2620
UDP    [fe80::718c:22bb:fd97:c06c%23]:61322  *:*                                    2620
UDP    [fe80::85d0:3b5c:7746:6953%5]:1900  *:*                                    2620
UDP    [fe80::85d0:3b5c:7746:6953%5]:61325  *:*                                    2620

我用来测试打开端口的 f # 代码:

open System.Net
open System.Net.Sockets


let ipAddress = IPAddress([| (byte)0; (byte)0; (byte)0; (byte)0 |])


let ipEndpoint portNumber = (IPEndPoint(ipAddress, portNumber), portNumber)


let getPorts = seq { for i in 1 .. 65535 -> i }


let checkIfPortAvailable (endpoint, portNumber) =
use listener = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp)
try
listener.Bind(endpoint)
(portNumber, true, null)
with
| ex -> (portNumber, false, ex)


[<EntryPoint>]
let main argv =
getPorts
|> Seq.map ipEndpoint
|> Seq.map checkIfPortAvailable
|> Seq.where (fun (_, works, _) -> not works)
|> Seq.where (fun (_, _, ex) -> ex.Message.Contains("An attempt was made to access a socket in a way forbidden by its access permissions"))
|> Seq.iteri (fun index (port, _, _) -> printfn "%5d: %d" index port)


0

以及执行应用程序时的输出(在 netstat 命令之后执行) :

0: 445
1: 5357
2: 7680
3: 49670
4: 49671
5: 49672
6: 49673
7: 49674
8: 49675
9: 49676
10: 49677
11: 49678
12: 49679
13: 49680
14: 49681
15: 49682
16: 49683
17: 49684
18: 49685
19: 49686
20: 49687
21: 49688
22: 49689
23: 49710
24: 49711
25: 49712
26: 49713
27: 49714
28: 49715
29: 49716
30: 49717
31: 49718
32: 49719
33: 49720
34: 49721
35: 49722
36: 49723
37: 49724
38: 49725
39: 49726
40: 49727
41: 49728
42: 49729
43: 49730
44: 49731
45: 49732
46: 49733
47: 49734
48: 49735
49: 49736
50: 49737
51: 49738
52: 49739
53: 49740
54: 49741
55: 49742
56: 49743
57: 49744
58: 49745
59: 49746
60: 49747
61: 49748
62: 49749
63: 49750
64: 49751
65: 49752
66: 49753
67: 49754
68: 49755
69: 49756
70: 49757
71: 49758
72: 49759
73: 49770
74: 49771
75: 49772
76: 49773
77: 49774
78: 49775
79: 49776
80: 49777
81: 49778
82: 49779
83: 49780
84: 49781
85: 49782
86: 49783
87: 49784
88: 49785
89: 49786
90: 49787
91: 49788
92: 49789
93: 49790
94: 49791
95: 49792
96: 49793
97: 49794
98: 49795
99: 49796
100: 49797
101: 49798
102: 49799
103: 49825
104: 49826
105: 49827
106: 49828
107: 49829
108: 49830
109: 49831
110: 49832
111: 49833
112: 49834
113: 49835
114: 49836
115: 49837
116: 49838
117: 49839
118: 49840
119: 49841
120: 49842
121: 49843
122: 49844
123: 49845
124: 49846
125: 49847
126: 49848
127: 49849
128: 49850
129: 49851
130: 49852
131: 49853
132: 49854
133: 49855
134: 49856
135: 49857
136: 49858
137: 49859
138: 49860
139: 49861
140: 49862
141: 49863
142: 49864
143: 49866
144: 49867
145: 49868
146: 49869
147: 49870
148: 49871
149: 49872
150: 49873
151: 49874
152: 49875
153: 49876
154: 49877
155: 49878
156: 49879
157: 49880
158: 49881
159: 49882
160: 49883
161: 49884
162: 49885
163: 50274
164: 50275
165: 50276
166: 50277
167: 50278
168: 50279
169: 50280
170: 50281
171: 50282
172: 50283
173: 50284
174: 50285
175: 50286
176: 50287
177: 50288
178: 50289
179: 50290
180: 50291
181: 50292
182: 50293

我实际想要打开的端口是 49786，但是我的小型测试算法拒绝了报告的许可，但是在检查 netstat 时没有分配的端口数量让我感到困惑

更新3:

现在，简单地运行 shutdown /s /f /t 0不再工作，我已经找到了另一个解决方案，似乎是工作相当可靠的 https://social.technet.microsoft.com/Forums/windows/en-US/e0cc1b3e-2c63-451a-abc8-8e1e66a23287/an-attempt-was-made-to-access-a-socket-in-a-way-forbidden-by-its-access-permissions?forum=w7itpronetworking-netsh int ip reset和重新启动计算机(正常的 Windows 10重新启动就够了)和端口始终可用的下一次启动(但它只有3次尝试)

更新4:

评论摘要:

  • 在小 f # 脚本中设置 SO _ REUSEADDR 只会使情况变得更糟
  • 尝试关闭 skype、 VPN 应用程序、 Dropbox 和类似程序没有任何效果(是的，我确实确保了进程被终止)
77064 次浏览
小开

When I looked for it, the explanation was

An attempt was made to access a socket in a way forbidden by its access permissions. An example is using a broadcast address for sendto without broadcast permission being set using setsockopt(SO_BROADCAST).

Another possible reason for the WSAEACCES error is that when the bind function is called (on Windows NT 4.0 with SP4 and later), another application, service, or kernel mode driver is bound to the same address with exclusive access. Such exclusive access is a new feature of Windows NT 4.0 with SP4 and later, and is implemented by using the SO_EXCLUSIVEADDRUSE option.

小开
最佳答案

The reason is that Hyper-V takes over these ports, to prevent it from happening do the following:

  1. dism.exe /Online /Disable-Feature:Microsoft-Hyper-V (will have to restart)
  2. netsh int ipv4 add excludedportrange protocol=tcp startport=<your port> numberofports=1
  3. dism.exe /Online /Enable-Feature:Microsoft-Hyper-V /All

The original solution is here.

If after that you still can't bind to the port do the following:

  • netsh http add iplisten 0.0.0.0 for IPv4
  • netsh http add iplisten :: for IPv6

More information is here.

小开

In case someone lands up here after facing similar issues post updating Windows to May 2020 update which contains WSL2. In my case I also switched docker to WSL2 post which I started facing similar issues with some of my containers.

Note: Run the following commands in powershell (Run as administrator)

  1. Disable Hyper-V.

    dism.exe /Online /Disable-Feature:Microsoft-Hyper-V

  2. Remove all hyper-v related network adapters.

    Get-HNSNetwork | Remove-HNSNetwork

  3. Reboot.

小开

A faulty Windows upgrade is the reason for the problems with reserved tcp ports. See https://github.com/docker/for-win/issues/3171#issuecomment-554587817

With this the problem should be fixed: netsh int ipv4 set dynamic tcp start=49152 num=16384

That would explain why a clean install fixes these type of problems.

小开

If you face this issue on Win10 2004 that's because of of an issue in this update do the following

netsh int ipv[46] set dynamic tcp start=49152 num=16384

reg add HKLM\SYSTEM\CurrentControlSet\Services\hns\State /v EnableExcludedPortRange /d 0 /f

I face this on opening Jetbrains IDEs and and many other program that use sockets

小开

Expanding on the selected answer: if you have Hyper-V enabled, you can temporarily disable it during boot by using bcdedit:

bcdedit /Set {current} hypervisorlaunchtype off

Restart and exclude the necessary ports via:

netsh int ipv4 add excludedportrange protocol=tcp startport=<your port> numberofports=1

Then simply re-enable Hyper-V, then restart:

bcdedit /Set {current} hypervisorlaunchtype auto

This prevents having to completely remove and re-add the Hyper-V feature, which requires several restarts.

小开

I also had the Hyper-v/WSL problem above, but found a simpler solution:

I had stopped docker before doing this, not sure if it's necessary.

Run as admin:

net stop winnat
net start winnat
小开

I am having a similar issue right now(August 2021) and this GitHub issue has some insight into the problem. It seems

net stop winnat
net start winnat

Should fix the issue, you might need to start your application before restarting winnat


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