Je n’ai pas une réponse toute faite. Je t’ai dit comment j’avais résolu le problème tout simplement. A l’époque j’avais cherché, sans avoir trouvé une réponse garantie. Voilà quelques pistes que j’avais déniché :
Icon Cache: C:\Users\tonnom\AppData\Local\IconCache.db
PS: In newer Windows versions, the file iconcache.db will be present in %userprofile%\AppData\local folder.
In Windows 8 and Windows 10, the icon cache file is located in:
C:\Users\yourname\AppData\Local\Microsoft\Windows\Explorer\
There will be a HIDDEN file "IconCache.db", delete or rename it and restart your system.
How to Rebuild the Icon Cache:
● I delete first the file C:\Users\myname\AppData\Local\IconCache.db
Then
● Close and save anything that you are working on before proceeding. Open File Explorer and go to the following folder: C:\Users\myname\AppData\Local\Microsoft\Windows\Explorer\
● Press and hold the Shift key and right-click on the Explorer folder. Select “Open command window here.”
A command prompt window will open at that path.
● To make sure the command prompt is in the correct folder, type the dir command. You should see the iconcache and thumbcache files we discussed earlier appear.
● Right-click on the Windows taskbar and choose Task Manager from the shortcut menu.
● Right-click on “Windows Explorer” in the list and choose “End task” (Beëindigen) from the shortcut menu. The Explorer and desktop will disappear. Exit Task Manager and make sure that no other application is running except for the command prompt window.
● In the command prompt window type the following command:
del iconcache*
● Run the dir command to check the list of remaining files. If one or more iconcache files are still listed, it means some applications are still running in the background. Close them and repeat the procedure again, if necessary.
● Now you can restart Explorer from the taskbar or you can press the Ctrl+Alt+Del keys simultaneously, choose “Sign off” and then sign back in. You can as well restart your computer. Any out-of-date or missing icons should hopefully get repaired or re-created..
Remember, rebuilding the icon cache will not help with thumbnails issues (you’ll need to go through this process to do that), the wrong icon for a specific file extension, or a missing shortcut icon. But if you have other icon problems, hopefully rebuilding the icon cache will fix them.
● Parfois il suffit d’arrêter l’explorateur avec le gestionnaire des tâches et le démarrer.
Registre
Method 1:
You can also try to increase icon cache size using following method:
1. Run Regedit. Now go to following key:
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Explorer
2. In right-side pane, look for MaxCachedIcons string. By default, its value is set to 500.
3. Double-click on the string and change its value to 2048
Actually the value of this String is set into kB. You can set its value anywhere between 100 to 8192 which means 100kB to 8MB.
4. Restart your computer and it should fix the problem.
Method 2:
1. Run Regedit. Now go to following key:
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Explorer
2. Under this key, you'll see a key (folder) "DriveIcons". Delete it and log off or restart your Windows or stop and restart Explorer.exe.
