Changes the datetime stamp of one or more files or folders. Wildcards are supported.

FileSetTime YYYYMMDDHH24MISS, FilePattern, WhichTime, Mode



If blank or omitted, it defaults to the current time. Otherwise, specify the time to use for the operation (see Remarks for the format). Years prior to 1601 are not supported.


The name of a single file or folder, or a wildcard pattern such as C:\Temp\*.tmp. FilePattern is assumed to be in A_WorkingDir if an absolute path isn't specified.

If omitted, the current file of the innermost enclosing File-Loop will be used instead.

Which timestamp to set:
M = Modification time (this is the default if the parameter is blank or omitted)
C = Creation time
A = Last access time

Zero or more of the following letters:

D: Include directories (folders).
F: Include files. If both F and D are omitted, files are included but not folders.
R: Subfolders are recursed into so that files and folders contained therein are operated upon if they match FilePattern. All subfolders will be recursed into, not just those whose names match FilePattern. If R is omitted, files and folders in subfolders are not included.

Note: If FilePattern is a single folder rather than a wildcard pattern, it will always be operated upon regardless of this setting.


ErrorLevel is set to the number of files that failed to be changed or 0 otherwise. If the specified timestamp is invalid, or FilePattern resolves to a blank value, ErrorLevel is set to 1.

If files were found, A_LastError is set to 0 (zero) or the result of the operating system's GetLastError() function immediately after the last failure. Otherwise A_LastError contains an error code that might indicate why no files were found.


Known limitation: Files and folders with a complete path name longer than 259 characters are skipped over, and may or may not be counted in ErrorLevel. Such files are rare because normally, the operating system does not allow their creation.

A file's last access time might not be as precise on FAT16 & FAT32 volumes as it is on NTFS volumes.

The elements of the YYYYMMDDHH24MISS format are:

YYYY The 4-digit year
MM The 2-digit month (01-12)
DD The 2-digit day of the month (01-31)
HH24 The 2-digit hour in 24-hour format (00-23). For example, 09 is 9am and 21 is 9pm.
MI The 2-digit minutes (00-59)
SS The 2-digit seconds (00-59)

If only a partial string is given for YYYYMMDDHH24MISS (e.g. 200403), any remaining element that has been omitted will be supplied with the following default values:

MM: Month 01
DD: Day 01
HH24: Hour 00
MI: Minute 00
SS: Second 00

The built-in variable A_Now contains the current local time in the above format. Similarly, A_NowUTC contains the current Coordinated Universal Time.

Note: Date-time values can be compared, added to, or subtracted from via DateAdd and DateDiff. Also, it is best to not use greater-than or less-than to compare times unless they are both the same string length. This is because they would be compared as numbers; for example, 20040201 is always numerically less (but chronologically greater) than 200401010533. So instead use DateDiff to find out whether the amount of time between them is positive or negative.


FileGetTime, FileGetAttrib, FileSetAttrib, FileGetSize, FileGetVersion, FormatTime, File-loop, DateAdd, DateDiff


; Set the modification time to the current time for all matching files:
FileSetTime "", "C:\temp\*.txt"

; Set the modification date (time will be midnight):
FileSetTime 20040122, "C:\My Documents\test.doc"

; Set the creation date. The time will be set to 4:55pm:
FileSetTime 200401221655, "C:\My Documents\test.doc", "C"

; Change the mod-date of all files that match a pattern.
; Any matching folders will also be changed due to the last parameter:
FileSetTime 20040122165500, "C:\Temp\*.*", "M", "DF"