我花了一天中的大部分时间来审查这里报告的类似问题，但遗憾的是，我无法确定任何与此案例中的独特方面相对应的问题。
问题：
在应用 Windows 更新 KB4486553（可能与此有关，也可能无关）并重新启动后，PC 通过以太网连接和 USB Wi-Fi 连接丢失了所有互联网连接。网络上的所有其他设备（包括另一台同样更新的 X99 Windows 10 PC）均不受影响。
不同寻常的是，这也许只是因为 PC 是一台旧的 X58（华硕 P6T7 主板），因此启动缓慢，每次重新启动时，互联网最初都是连接的（Google 页面、Outlook 2016、TeamViewer 连接、WhatsApp 访问、OneDrive、Dropbox 等都证明了这一点）。然而，在几分钟内（启动顺序期间），所有连接都丢失了。但是，网络设置“状态”继续报告“您已连接到互联网”（虽然显然没有），任务栏（或其他地方）上没有显示任何警告三角形。
故障排除步骤（据我记忆所及，已尝试过）：
- 卸载问题发生前的 Windows 更新
- 重新启动电脑（多次）
- 重新启动路由器（多次）
- 交换两条以太网线（已知良好的）
- Wi-Fi 网络报告（图表显示连接/断开连接）
- Ping（网关 IP）– 始终成功
- Ping（互联网）——总是失败（公平地说，当我能够 Ping 时，连接总是断开了）
- 运行网络疑难解答（Windows 无法自动检测此网络的代理设置）
- 重置 TCP/IP 堆栈 (
netsh winsock reset/netsh int ip reset) - 释放/续订 IP 地址 (
ipconfig /renew & ipconfig /renew) - 刷新并重置 DNS 客户端解析器缓存 (
ipconfig /flushdns) - 卸载、更换并随后（作为进一步的步骤）更新网络适配器驱动程序至最新发布的
- 禁用（用于测试）防病毒和防火墙软件
- 尝试将系统还原到三个单独的最近还原点（由于防病毒软件在还原尝试之前已被禁用，因此所有还原均失败）
- 在 Windows 10 设置中执行网络重置
- 重新启动至带网络连接的安全模式，并选择性启动（
msconfig）以进行诊断 - 将网络设置与正常运行的 Windows 10 计算机进行比较，以查找异常
- 审查事件查看器日志（应用程序和服务日志）
- Microsoft/Windows/通用遥测客户端
Event 55 Reports: "Is the Internet available:true"
Error 29 Reports: "Connection state - Some connections have failed since the previous period."
尚未尝试（因为可能会丢失为方便使用而应用的大范围复杂菜单调整）
- 就地系统修复安装
尽管应用了上述故障排除步骤，上述情况仍在所有场景中继续发生，通常是多次和以各种组合发生。
因此，我欢迎任何关于我还可以尝试什么以及如何解决这个问题的想法。
PC Pilot
Route Print Output (at initial start up – connected)
===========================================================================
Interface List
6...20 cf 30 e4 1d 84 ......Realtek PCIe GbE Family Controller
21...20 cf 30 e4 1e 7f ......Realtek PCIe GbE Family Controller #2
12...0a 00 27 00 00 0c ......VirtualBox Host-Only Ethernet Adapter
20...00 ff a2 97 37 5b ......Npcap Loopback Adapter
27...b2 6e bf a9 4d 25 ......Microsoft Wi-Fi Direct Virtual Adapter #5
13...b0 6e bf a9 4d 25 ......ASUS USB-AC68 USB Wireless adapter
19...00 ff 9d ee fa 7f ......TAP-Windows Adapter V9
11...00 50 56 c0 00 01 ......VMware Virtual Ethernet Adapter for VMnet1
26...00 50 56 c0 00 08 ......VMware Virtual Ethernet Adapter for VMnet8
1...........................Software Loopback Interface 1
===========================================================================
IPv4 Route Table
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 192.168.50.1 192.168.50.21 26
0.0.0.0 0.0.0.0 192.168.50.1 192.168.50.20 26
0.0.0.0 0.0.0.0 192.168.50.1 192.168.50.136 30
10.10.10.8 255.255.255.252 On-link 10.10.10.9 291
10.10.10.9 255.255.255.255 On-link 10.10.10.9 291
10.10.10.11 255.255.255.255 On-link 10.10.10.9 291
127.0.0.0 255.0.0.0 On-link 127.0.0.1 331
127.0.0.1 255.255.255.255 On-link 127.0.0.1 331
127.255.255.255 255.255.255.255 On-link 127.0.0.1 331
169.254.0.0 255.255.0.0 On-link 169.254.154.40 281
169.254.154.40 255.255.255.255 On-link 169.254.154.40 281
169.254.255.255 255.255.255.255 On-link 169.254.154.40 281
192.168.35.0 255.255.255.0 On-link 192.168.35.1 291
192.168.35.1 255.255.255.255 On-link 192.168.35.1 291
192.168.35.255 255.255.255.255 On-link 192.168.35.1 291
192.168.50.0 255.255.255.0 On-link 192.168.50.20 281
192.168.50.0 255.255.255.0 On-link 192.168.50.21 281
192.168.50.0 255.255.255.0 On-link 192.168.50.136 286
192.168.50.20 255.255.255.255 On-link 192.168.50.20 281
192.168.50.21 255.255.255.255 On-link 192.168.50.21 281
192.168.50.136 255.255.255.255 On-link 192.168.50.136 286
192.168.50.255 255.255.255.255 On-link 192.168.50.20 281
192.168.50.255 255.255.255.255 On-link 192.168.50.21 281
192.168.50.255 255.255.255.255 On-link 192.168.50.136 286
192.168.106.0 255.255.255.0 On-link 192.168.106.1 291
192.168.106.1 255.255.255.255 On-link 192.168.106.1 291
192.168.106.255 255.255.255.255 On-link 192.168.106.1 291
224.0.0.0 240.0.0.0 On-link 127.0.0.1 331
224.0.0.0 240.0.0.0 On-link 192.168.35.1 291
224.0.0.0 240.0.0.0 On-link 192.168.106.1 291
224.0.0.0 240.0.0.0 On-link 169.254.154.40 281
224.0.0.0 240.0.0.0 On-link 10.10.10.9 291
224.0.0.0 240.0.0.0 On-link 192.168.50.21 281
224.0.0.0 240.0.0.0 On-link 192.168.50.20 281
224.0.0.0 240.0.0.0 On-link 192.168.50.136 286
255.255.255.255 255.255.255.255 On-link 127.0.0.1 331
255.255.255.255 255.255.255.255 On-link 192.168.35.1 291
255.255.255.255 255.255.255.255 On-link 192.168.106.1 291
255.255.255.255 255.255.255.255 On-link 169.254.154.40 281
255.255.255.255 255.255.255.255 On-link 10.10.10.9 291
255.255.255.255 255.255.255.255 On-link 192.168.50.21 281
255.255.255.255 255.255.255.255 On-link 192.168.50.20 281
255.255.255.255 255.255.255.255 On-link 192.168.50.136 286
===========================================================================
Persistent Routes:
Network Address Netmask Gateway Address Metric
0.0.0.0 0.0.0.0 192.168.50.1 1
0.0.0.0 0.0.0.0 192.168.50.1 1
===========================================================================
IPv6 Route Table
===========================================================================
Active Routes:
If Metric Network Destination Gateway
6 281 ::/0 fe80::e9d:92ff:fe01:8588
21 281 ::/0 fe80::e9d:92ff:fe01:8588
13 286 ::/0 fe80::e9d:92ff:fe01:8588
1 331 ::1/128 On-link
6 281 2001:470:1942::/64 On-link
21 281 2001:470:1942::/64 On-link
13 286 2001:470:1942::/64 On-link
13 286 2001:470:1942:0:2947:65cd:7044:a9e1/128
On-link
6 281 2001:470:1942:0:75ad:a534:4f40:4541/128
On-link
21 281 2001:470:1942:0:9127:d446:6938:4bf5/128
On-link
21 281 2001:470:1942:0:a567:2726:4944:4447/128
On-link
13 286 2001:470:1942:0:cd3d:e955:bc68:b9c5/128
On-link
6 281 2001:470:1942:0:f4c5:2d69:c1b:1601/128
On-link
26 291 fe80::/64 On-link
11 291 fe80::/64 On-link
12 281 fe80::/64 On-link
21 281 fe80::/64 On-link
6 281 fe80::/64 On-link
13 286 fe80::/64 On-link
19 291 fe80::/64 On-link
19 291 fe80::14b:3533:f9b:611f/128
On-link
13 286 fe80::2947:65cd:7044:a9e1/128
On-link
12 281 fe80::383c:d35f:ddc0:9a28/128
On-link
11 291 fe80::61c1:6a17:dd7e:ea90/128
On-link
6 281 fe80::75ad:a534:4f40:4541/128
On-link
21 281 fe80::a567:2726:4944:4447/128
On-link
26 291 fe80::f9b6:5a73:ff7b:4300/128
On-link
1 331 ff00::/8 On-link
26 291 ff00::/8 On-link
11 291 ff00::/8 On-link
12 281 ff00::/8 On-link
19 291 ff00::/8 On-link
21 281 ff00::/8 On-link
6 281 ff00::/8 On-link
13 286 ff00::/8 On-link
===========================================================================
Persistent Routes:
None
Route Print Output (at initial start up + 1 minute – disconnected)
===========================================================================
Interface List
6...20 cf 30 e4 1d 84 ......Realtek PCIe GbE Family Controller
21...20 cf 30 e4 1e 7f ......Realtek PCIe GbE Family Controller #2
12...0a 00 27 00 00 0c ......VirtualBox Host-Only Ethernet Adapter
20...00 ff a2 97 37 5b ......Npcap Loopback Adapter
27...b2 6e bf a9 4d 25 ......Microsoft Wi-Fi Direct Virtual Adapter #5
13...b0 6e bf a9 4d 25 ......ASUS USB-AC68 USB Wireless adapter
19...00 ff 9d ee fa 7f ......TAP-Windows Adapter V9
11...00 50 56 c0 00 01 ......VMware Virtual Ethernet Adapter for VMnet1
26...00 50 56 c0 00 08 ......VMware Virtual Ethernet Adapter for VMnet8
1...........................Software Loopback Interface 1
===========================================================================
IPv4 Route Table
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 192.168.50.1 192.168.50.21 26
0.0.0.0 0.0.0.0 192.168.50.1 192.168.50.20 26
0.0.0.0 0.0.0.0 192.168.50.1 192.168.50.136 30
10.10.10.8 255.255.255.252 On-link 10.10.10.9 291
10.10.10.9 255.255.255.255 On-link 10.10.10.9 291
10.10.10.11 255.255.255.255 On-link 10.10.10.9 291
127.0.0.0 255.0.0.0 On-link 127.0.0.1 331
127.0.0.1 255.255.255.255 On-link 127.0.0.1 331
127.255.255.255 255.255.255.255 On-link 127.0.0.1 331
169.254.0.0 255.255.0.0 On-link 169.254.154.40 281
169.254.154.40 255.255.255.255 On-link 169.254.154.40 281
169.254.255.255 255.255.255.255 On-link 169.254.154.40 281
192.168.35.0 255.255.255.0 On-link 192.168.35.1 291
192.168.35.1 255.255.255.255 On-link 192.168.35.1 291
192.168.35.255 255.255.255.255 On-link 192.168.35.1 291
192.168.50.0 255.255.255.0 On-link 192.168.50.20 281
192.168.50.0 255.255.255.0 On-link 192.168.50.21 281
192.168.50.0 255.255.255.0 On-link 192.168.50.136 286
192.168.50.20 255.255.255.255 On-link 192.168.50.20 281
192.168.50.21 255.255.255.255 On-link 192.168.50.21 281
192.168.50.136 255.255.255.255 On-link 192.168.50.136 286
192.168.50.255 255.255.255.255 On-link 192.168.50.20 281
192.168.50.255 255.255.255.255 On-link 192.168.50.21 281
192.168.50.255 255.255.255.255 On-link 192.168.50.136 286
192.168.106.0 255.255.255.0 On-link 192.168.106.1 291
192.168.106.1 255.255.255.255 On-link 192.168.106.1 291
192.168.106.255 255.255.255.255 On-link 192.168.106.1 291
224.0.0.0 240.0.0.0 On-link 127.0.0.1 331
224.0.0.0 240.0.0.0 On-link 192.168.35.1 291
224.0.0.0 240.0.0.0 On-link 192.168.106.1 291
224.0.0.0 240.0.0.0 On-link 169.254.154.40 281
224.0.0.0 240.0.0.0 On-link 10.10.10.9 291
224.0.0.0 240.0.0.0 On-link 192.168.50.21 281
224.0.0.0 240.0.0.0 On-link 192.168.50.20 281
224.0.0.0 240.0.0.0 On-link 192.168.50.136 286
255.255.255.255 255.255.255.255 On-link 127.0.0.1 331
255.255.255.255 255.255.255.255 On-link 192.168.35.1 291
255.255.255.255 255.255.255.255 On-link 192.168.106.1 291
255.255.255.255 255.255.255.255 On-link 169.254.154.40 281
255.255.255.255 255.255.255.255 On-link 10.10.10.9 291
255.255.255.255 255.255.255.255 On-link 192.168.50.21 281
255.255.255.255 255.255.255.255 On-link 192.168.50.20 281
255.255.255.255 255.255.255.255 On-link 192.168.50.136 286
===========================================================================
Persistent Routes:
Network Address Netmask Gateway Address Metric
0.0.0.0 0.0.0.0 192.168.50.1 1
0.0.0.0 0.0.0.0 192.168.50.1 1
===========================================================================
IPv6 Route Table
===========================================================================
Active Routes:
If Metric Network Destination Gateway
6 281 ::/0 fe80::e9d:92ff:fe01:8588
21 281 ::/0 fe80::e9d:92ff:fe01:8588
13 286 ::/0 fe80::e9d:92ff:fe01:8588
1 331 ::1/128 On-link
6 281 2001:470:1942::/64 On-link
21 281 2001:470:1942::/64 On-link
13 286 2001:470:1942::/64 On-link
13 286 2001:470:1942:0:2947:65cd:7044:a9e1/128
On-link
6 281 2001:470:1942:0:75ad:a534:4f40:4541/128
On-link
21 281 2001:470:1942:0:9127:d446:6938:4bf5/128
On-link
21 281 2001:470:1942:0:a567:2726:4944:4447/128
On-link
13 286 2001:470:1942:0:cd3d:e955:bc68:b9c5/128
On-link
6 281 2001:470:1942:0:f4c5:2d69:c1b:1601/128
On-link
26 291 fe80::/64 On-link
11 291 fe80::/64 On-link
12 281 fe80::/64 On-link
21 281 fe80::/64 On-link
6 281 fe80::/64 On-link
13 286 fe80::/64 On-link
19 291 fe80::/64 On-link
19 291 fe80::14b:3533:f9b:611f/128
On-link
13 286 fe80::2947:65cd:7044:a9e1/128
On-link
12 281 fe80::383c:d35f:ddc0:9a28/128
On-link
11 291 fe80::61c1:6a17:dd7e:ea90/128
On-link
6 281 fe80::75ad:a534:4f40:4541/128
On-link
21 281 fe80::a567:2726:4944:4447/128
On-link
26 291 fe80::f9b6:5a73:ff7b:4300/128
On-link
1 331 ff00::/8 On-link
26 291 ff00::/8 On-link
11 291 ff00::/8 On-link
12 281 ff00::/8 On-link
19 291 ff00::/8 On-link
21 281 ff00::/8 On-link
6 281 ff00::/8 On-link
13 286 ff00::/8 On-link
===========================================================================
Persistent Routes:
None
答案1
快速更新解决方案，希望它能帮助其他遇到同样问题的人。终于找到了原因。
尽管 Q 中描述了 10 天内采取了无数的故障排除步骤，包括从“安全模式”开始并禁用启动项，但奇怪的是，罪魁祸首竟然是 IPVanish VPN Windows 应用程序（我只能推测在 Windows 更新重启期间经历了某种形式的损坏）和一个名为“终止开关”的复选框设置，该设置被发现在应用程序深处被神秘地启用。
IPVanish 始终配置为随“Windows”启动，但处于 VPN 断开状态。看来 IPVanish 深深嵌入启动序列中。它被设置为断开启动（因为在使用 Outlook 时连接到 VPN 时无法访问电子邮件服务器，而 Outlook 本身设置为随 Windows 10 自动启动，因此会在后台收集我的电子邮件）这一事实触发了（现已启用的）终止开关提供的保护。
IPVanish 提供了以下有关“Kill Switch”的有用摘要：
什么是 Kill Switch？如果/当您当前的 VPN 连接停止工作时，Kill Switch 会关闭所有互联网流量。如果您想最大限度地保护您的隐私和匿名性，这是一个很棒的功能，因为如果您没有受到 VPN 的保护，Kill Switch 会切断您的互联网。这意味着即使与我们的 VPN 的连接断开，您的隐私仍然是安全的。
IPVanish 继续发表了以下有趣的评论：
如果您在连接互联网时遇到任何问题，请仔细检查以确保 Kill Switch 尚未启用。