Why does pinging my Ethernet IPv4 address return “General failure”?
I'm troubleshooting a direct Ethernet connection between laptops. I can ping the other laptop over the RJ45 cable, but the other laptop cannot ping mine, and pinging my…
network diagnostics
Wi-Fi Works on One Device but Other Devices Have No Internet
My Wi-Fi suddenly stopped providing internet access on most of my devices. One OPPO phone still connects successfully, but my Realme phone and PC connect to the Wi-Fi…
What should you check first when an EC2 instance suddenly stops accepting SSH?
An EC2 instance was working normally, but SSH access suddenly stopped. I'm trying to create a reliable troubleshooting decision tree rather than changing security groups at random. What…
Why is my upload speed stuck at 2–10 Mbps when my plan includes 50 Mbps?
I'm paying for 1 Gbps download and 50 Mbps upload, but my upload speed has been consistently terrible. The gateway app reports roughly 1 Gbps down and 137…
How can I pinpoint the cause of brief internet dropouts?
I'm helping two family members troubleshoot different internet setups that randomly lose connectivity for about 10–15 seconds. The problem may happen once a day or several times daily.…
How can I pinpoint the cause of brief, random internet dropouts?
I'm trying to troubleshoot two separate home networks where the internet randomly stops working for about 10–15 seconds. It may happen once a day or several times in…
Why do all my browsers load slowly unless I use a VPN?
I'm running Windows 11 with Bitdefender Antivirus and Mullvad VPN on a 1 Gbps fiber connection. For several weeks, Chrome, Edge, and Firefox have all taken around 10–15…
Why do all my browsers load slowly unless my VPN is enabled?
I'm using a Windows 11 PC with Bitdefender Antivirus and Mullvad VPN on a 1 Gbps fiber connection. For the past few weeks, Chrome, Edge, and Firefox have…
Why does my internet only start working after I run Network Diagnostics?
My PC was fine for months, but now almost every time I boot it, websites won't load even though Windows says I'm connected through both Ethernet and Wi‑Fi.…
Internet Only Works After Running Network Diagnostics on Startup
My PC was fine for months, but now it often boots with no usable internet connection. Windows shows that I'm connected through both Ethernet and Wi‑Fi, yet websites…