[SOLVED] Windows Desktop Client Sync: Could not update metadata due to invalid modification time

Dear nextcloud community,
a few days ago, my windows desktop sync stopped working after working like a charm for months. It is user specific, the other users do not have any problems when synchronizing with their clients.

From my ~100000 files, i get the error “could not update metadata due to invalid modification time: 0” about 40 000x (see image)

Does anyone have a solution for this issue? I tried to uninstall the clients from all pc’s and phones, including the appdata-files. When reinstalling, I always get the same problem again. Also the same when i try to install it on a fresh machine.

Thanks a lot in advance!



EDIT: Installed client version 3.3.6, everything works fine again.

I had the same issue with using client version 3.4.1.
Solved it by downgrading to 3.3.6


We had the same issue. I created a script that resolved the modification issue on the backend doing the following.

Same problems here. The problem started after 3.4.0 update. Currently there is hundreds deletet files in trash, and some of there seems to be unable to restore, because invalid modified time for …

The nextcloud supplied script does not work in snap.

Migrated from owncloud right into this issue.


1 Like

Same issue here. too many files and timestamp is not even 1970-01-01.

timestamp on one of the files is :

Access: 2022-03-03 12:55:30.050780811 +0100
Modify: 2022-03-03 12:55:10.546718300 +0100
Change: 2022-03-03 12:55:47.950838145 +0100
Birth: -

please solve this issue as I do not want to downgrade nextcloud to old version. this cannot be the right solution

i used this on the server nextcloud volume

find . -type f -newermt “1969-01-01” ! -newermt “1971-01-01” -print0 |xargs -0 touch

to fix the zero epoch dates and then runned in my docker:

docker exec -it -u 33 nextcloud-docker bash

./occ files:scan --all


Could take a while depeding on users/files

Hi Inalto, thank you for helping,

however I tried this already, and no files found with those timestamps. As I mentioned in my other post, all timestamps on the file is “marts 03 2022”, and the filesync still report an error.

i just tried the find command " find . -type f -newermt “1969-01-01” ! -newermt “1971-01-01”
" - without the “delete option” afterwards, and still no files found with this timestamp

Perhaps i need to mention that those files are located on an external share which is mounted using nextcloud mount option. I did run this command on the fileserver itself where the files are based and no files with this timestamp located.

This is no Solution… This is a workaround max. And the Question was to fix it for Windows Client and not for Mac… Still open.

in my case i had files to be synchronized with the server through the client (windows) and they had this error.

Using power windows shell, I used this command and changed the timestemp of all files in the folder.

Get-ChildItem -force "d:\test\*" | ForEach-Object{$_.LastWriteTime = ("3 August 2022 17:10:00")}

Solved my problem and the file was synced.