Timestamp method generates Invalid timestamp

Hello,

Been using the "timestamp" method for a long time, but it has stopped working.

I'm now getting this error : Invalid timestamp: Invalid date/timestamp : "2026-09-31 05:43:41,410". My guess is that the ",410" part is unexpected here.

I used this method recently with no issue, but I'm not sure on what version I was. I use it via the command line, so I don't get update notices. I did update to 4.27 and the issue is still there.

There were recent Windows updates, so something may have change there that impacts Advanced Renamer...

"methods" : [
{
"methodname" : "timestamp",
"active" : true,
"applyto" : "created,accessed,modified",
"change" : "filenamepattern",
"pattern" : "<Year>-<Month>-<Day>",
"metadatafield" : ""
}
],

Reply to #1:
Hi Bruno,
I can't get v4.27 on Win11 fully updated to fail using your specs. I don't see why that would be changed anyway, since it's in the time portion of the timestamp and you aren't changing *that*. Do you have another timestamp method in the batch?

I'd drop a line to Kim; click Support above. But he may need more information (like the .aren file and filename examples), but he can let you know that of course.

Good luck!
DF

Reply to #1:
The problem is that 2026-09-31 is an invalid date. September has 30 days, not 31. Seems like one of your files has an invalid timestamp in the filename and you try to change the file system timestamp to this invalid date.

Reply to #3:

Oh jeez! So sorry...

Reply to #4:

Yeah, me too... I shoulda caught that, since it's my sister's birthday. (The 30th, not the 31st :) I didn't even look at the filename date.