Command Prompt (cmd) Error Messages

The Windows command interpreter, its built-in commands and batch files.All Command Prompt (cmd) pages

'x' is not recognized as an internal or external command, operable program or batch file.cmd prints this when the name you typed is not a built-in command and no matching .exe, .cmd or .bat exists in the current folder or any PATH directory.
cmd: ... was unexpected at this time.cmd prints X was unexpected at this time when a line breaks after expansion: an empty variable in if, %i instead of %%i in a batch for loop, or a ) in a value.
cmd: Access is denied.Access is denied in cmd is Windows error 5: the file is read-only, NTFS permissions do not allow it, or the command needs an elevated Command Prompt to run.
cmd: The syntax of the command is incorrect.The syntax of the command is incorrect means cmd could not parse a line: usually an empty variable in an if test, unbalanced parentheses or a bad for loop.
cmd: The system cannot find the file specified.Windows error 2 means the folder exists but the file does not: a typo, a hidden extension like report.txt.txt, the wrong current folder or an unquoted path.
cmd: The system cannot find the path specified.cmd prints The system cannot find the path specified when a folder in the path is missing, a path with spaces is unquoted, or AutoRun names a bad path.
The filename, directory name, or volume label syntax is incorrect.Windows error 123: the path contains a character Windows forbids in names, such as < > | ? * or a stray colon or quote, often from a pasted path or a date.
The process cannot access the file because it is being used by another process.Windows error 32: another program holds the file open without sharing. Find it with Resource Monitor or handle.exe, close it, then retry the del, move or copy.
timeout: ERROR: Input redirection is not supported, exiting the process immediately.timeout.exe exits at once when its input is redirected, as in CI jobs, scheduled tasks and pipes. Wait with ping -n or PowerShell Start-Sleep instead.