Depuis the release of [KB5039212](https://support.microsoft.com/en-us/topic/june-11-2024-kb5039212-os-builds-22621-3737-and-22631-3737-d7f574c0-2b13-48ca-a9fc-a63093b1a2c2) on June 11, 2024 the modification date of fichiers changes when copied from a réseau par exemple from a réseau attached storage (NAS) avec Windows Explorateur de fichiers.
This problème was reported par exemple by [Lui Lui the 3rd](https://answers.microsoft.com/en-us/windows/forum/all/file-explorer-and-date-createdmodified-change-when/e6ad833e-a134-4da8-a9e0-815c92eeecfa) and [Janus Ch](https://answers.microsoft.com/pl-pl/windows/forum/all/a-date-of-a-file-during-copying-files/1a45b29d-0474-4d54-82a5-7482d9a323dc).
C'est un serious problème as it will destroy date information and stop backup logiciel from fonctionnel.
So how can the modification date be preserved?
Comment stop Windows from changing date modified when copying fichiers from réseau?
Re: Comment stop Windows from changing date modified when copying fichiers from réseau?
As discussed at [Jose Santiago_329](https://answers.microsoft.com/en-us/windows/forum/all/file-explorer-and-date-createdmodified-change-when/e6ad833e-a134-4da8-a9e0-815c92eeecfa?page=2) the reason is that
>
Starting in this mise à jour, Explorateur de fichiers adds the Mark du Web (MoTW) tag to fichiers and dossiers that come from untrusted locations. When MapUrlToZone classifies a fichier as “Internet,” that fichier également gets this tag. Parce que of this change, the “LastWriteTime” time stamp is updated. Cela pourrait affect some scenarios that rely on fichier copy operations.
Making the site trusted fonctionne around this problème as explained by [Ramesh Srinivasan (IA)](https://answers.microsoft.com/pl-pl/windows/forum/all/a-date-of-a-file-during-copying-files/1a45b29d-0474-4d54-82a5-7482d9a323dc):
>
Cela pourrait be a bug dans le recent Windows 11 builds. Cependant, il y a a workaround. To prevent the ADS from being written, vous pouvez add the ordinateur name that hosts the réseau share vers le Local Intranet zone in IE Options.
```
To open IE Options, run "inetcpl.cpl".
Click on the "Security" tab, and click "Local Intranet".
Click "Sites", and click "Advanced".
Add the computer name or the IP address you use to access the computer that hosts the network share to the list.
Click OK, OK, to save your settings.
```
Veuillez également report this bug through the Windows *Feedback Hub* to Microsoft and ask for a fix.
>
Starting in this mise à jour, Explorateur de fichiers adds the Mark du Web (MoTW) tag to fichiers and dossiers that come from untrusted locations. When MapUrlToZone classifies a fichier as “Internet,” that fichier également gets this tag. Parce que of this change, the “LastWriteTime” time stamp is updated. Cela pourrait affect some scenarios that rely on fichier copy operations.
Making the site trusted fonctionne around this problème as explained by [Ramesh Srinivasan (IA)](https://answers.microsoft.com/pl-pl/windows/forum/all/a-date-of-a-file-during-copying-files/1a45b29d-0474-4d54-82a5-7482d9a323dc):
>
Cela pourrait be a bug dans le recent Windows 11 builds. Cependant, il y a a workaround. To prevent the ADS from being written, vous pouvez add the ordinateur name that hosts the réseau share vers le Local Intranet zone in IE Options.
```
To open IE Options, run "inetcpl.cpl".
Click on the "Security" tab, and click "Local Intranet".
Click "Sites", and click "Advanced".
Add the computer name or the IP address you use to access the computer that hosts the network share to the list.
Click OK, OK, to save your settings.
```
Veuillez également report this bug through the Windows *Feedback Hub* to Microsoft and ask for a fix.