Articles
Windows
Windows and Windows Server errors explained: PowerShell, Remote Desktop and Active Directory, with the commands that fix them.
Windows Update error 0x80070643: find which update failed, then fix that one
Fix Windows Update error 0x80070643: find the failing update, repair the component store, reset Windows Update, and handle the WinRE partition and .NET cases.
Intermediate · 4 min read
Hyper-V "the hypervisor is not running": turn it on, in the firmware and at boot
Fix Hyper-V "Virtual machine could not be started because the hypervisor is not running": enable virtualization in the firmware, set hypervisorlaunchtype to auto.
Intermediate · 3 min read
Windows "The specified domain either does not exist or could not be contacted": it's usually DNS
Fix "The specified domain either does not exist or could not be contacted" when joining a domain: point DNS at a domain controller, test the SRV records, ports and time.
Intermediate · 4 min read
PowerShell "is not recognized as the name of a cmdlet": find out why it can't see the command
Fix PowerShell "is not recognized as the name of a cmdlet, function, script file": check the spelling, PATH, the .\ prefix for scripts and missing modules, step by step.
Beginner · 3 min read
DISM error 0x800f081f "The source files could not be found": give Windows a matching source
Fix DISM /RestoreHealth error 0x800f081f "The source files could not be found": point it at a matching install.wim, allow Windows Update, and repair with SFC afterwards.
Intermediate · 4 min read
IIS "HTTP Error 500.19" and "503 Service Unavailable": read the code, then fix web.config or the app pool
Fix IIS "HTTP Error 500.19" by its error code (a missing module, a bad web.config, permissions) and "503 Service Unavailable" by finding why the app pool stopped.
Intermediate · 4 min read
Windows "System error 53" and "System error 5" with net use: the network path, and access denied
Fix net use "System error 53: The network path was not found" and "System error 5: Access is denied": check DNS, ports 445 and 139, the share and your credentials.
Beginner · 4 min read
PowerShell "running scripts is disabled on this system": fix the execution policy safely
Fix PowerShell "cannot be loaded because running scripts is disabled": check the execution policy, use RemoteSigned for your user, and unblock downloaded scripts.
Beginner · 3 min read
RDP "An authentication error has occurred": CredSSP encryption oracle and other causes
Fix Remote Desktop "An authentication error has occurred" and "CredSSP encryption oracle remediation": update both machines, check NLA, passwords, time and port 3389.
Intermediate · 4 min read
Windows "The RPC server is unavailable" (0x800706BA): how to find what blocks it
Fix "The RPC server is unavailable" (0x800706BA, error 1722): check the name, port 135, the dynamic ports, the firewall rules and the RPC services, step by step.
Intermediate · 4 min read
Windows "The trust relationship between this workstation and the primary domain failed": fix it without rejoining
Fix "The trust relationship between this workstation and the primary domain failed": repair the computer account password with PowerShell, without rejoining the domain.
Intermediate · 4 min read
WSL "WslRegisterDistribution failed with error: 0x80370102": turn on virtualization
Fix WSL "WslRegisterDistribution failed with error: 0x80370102": enable virtualization in the firmware, Virtual Machine Platform, the hypervisor or nested virtualization.
Beginner · 3 min read