WSL Error Mounting File Systems? Read the Drive in dmesg
WSL says an error occurred mounting one of your file systems? dmesg names the drive. Remove a stray drive letter, unlock BitLocker, or fix the default distro.
Informational
Windows Terminal Asks Before Every Paste? Set It to Never
Windows Terminal warns before every multi-line paste? Open Settings, Interaction, and set Warn when pasting newlines to Never, or use warning.multiLinePaste.
MoUsoCoreWorker.exe Keeping Your PC Awake? Finish the Update
MoUsoCoreWorker.exe stopping sleep or eating RAM? It is the Windows Update worker. Install the waiting update and restart, restart the service, or override it.
Vmmem Using Too Much Memory? Shut Down WSL the Right Way
Vmmem holding gigabytes of RAM? It is a WSL or Hyper-V virtual machine. Quit Docker, run wsl –shutdown, end the WSL service if it hangs, then cap the memory.
SSH to Windows Says Permission Denied? Check the Account
SSH into a Windows PC says Permission denied? Use the online password, not the PIN, turn off Windows Hello only sign-in, or put an admin key in the right file.
Error 0x800f0954 Adding a Windows Feature? Check the Source
.NET 3.5, a language pack or OpenSSH fails with 0x800f0954? Windows cannot reach the files. Check the WSUS policy, or install .NET 3.5 from a matching ISO.
Windows.edb File Huge? Shrink the Search Index Safely
Windows.edb eating tens of gigabytes? It is the Windows Search index. Rebuild it, index fewer places, or delete it with Search stopped, and mind the sc typo.
Time Zone Grayed Out in Windows 11? Check Location First
Time zone list grayed out in Windows 11 Settings? Turn off Set time zone automatically, turn Location on, or set the zone with tzutil in an administrator terminal.
WSL Window Closes Right Away? Check the Default Distro
WSL window flashes open and closes at once? Your default distribution cannot start a shell. List it, set Ubuntu back as the default, or install a distribution first.
WSL 2 Has No Internet? Start With DNS, Not the Firewall
WSL says Temporary failure in name resolution while Windows browses fine? It is DNS. Reset the network with WSL shut down, write your own resolv.conf, or try mirrored mode.