WSL Not Freeing Disk Space? Compact the ext4.vhdx
WSL not giving disk space back after you delete files? The ext4.vhdx only grows. WSL 3.0.1 can compact it with one command, and older versions use diskpart.
PuTTY Couldn’t Agree on Host Key Algorithm? Update It
PuTTY couldn’t agree on host key algorithm? The server offers rsa-sha2 or ecdsa methods an old PuTTY lacks. Update PuTTY or FileZilla, or fix the server.
Zone.Identifier Files in WSL? Fix Copies and Downloads
Zone.Identifier files appearing in WSL? Add wsl.localhost to Local intranet for Explorer copies, stop zone data for downloads, and clear the old ones.
Lots of Console Window Host in Task Manager? Find the App
Many Console Window Host entries in Task Manager? Each conhost.exe belongs to one console program. List the parents in PowerShell and close what starts them.
PuTTY Key Format Too New? Save the Key as PPK Version 2
PuTTY key format too new? PuTTYgen 0.75 and later save PPK3, which older PuTTY cannot read. Update the old tool, or save the key again as PPK version 2.
Unable to Locate a Java Runtime on Mac? Install a JDK
Unable to locate a Java Runtime on your Mac? The java command only finds a JDK in one folder. Install a JDK, not the java.com runtime, and match the version.
wsappx High CPU or Disk? Check the Store and Startup Apps
wsappx using high CPU, memory or disk? It runs the Store install and license services. Let updates finish, save new apps to C:, and check startup apps.
CPU Stuck at 0.39 GHz on a Laptop? Check the Power First
Laptop CPU stuck at 0.39 GHz under load? Replug the charger until Windows sees it, update the BIOS and the maker power driver, and check the fans.
Slow Charger Warning on a Windows Laptop? What It Means
A warning on the battery icon or a Slow charger notice? The charger gives less than the laptop draws. Skip the dock, check the watts, or turn the notice off.
Command Prompt Pops Up and Closes? Find the Task Behind It
A Command Prompt window flashes up and closes on its own? A scheduled task is usually behind it. Match Last Run Time, filter Autoruns, or use Process Monitor.