1. Partybooper's Avatar
    Hello.

    It seems I am experiencing a heavily corrupted icon / thumbnail / folder cache on my Lumia 950 XL, currently on Fast Ring build 10.0.14393.3.
    This corrupted thumbnail cache exists for a long time now for me, I want to avoid a hard reset just to reset the thumbnail cache at all costs. I also have file system access and tried to find the "IconCache.db" files and thumbcache files on the phone's internal storage, but no luck. In the desktop version of Windows 10 the thumbnails / icons are stored in

    C:\Users\**UserName**\AppData\Local

    in a file called "IconCache.db". This seems not to be the case in the mobile version.

    Many apps (like WhatsApp for example) are showing me folders and images which I have either moved or deleted.
    How can I delete / reset the cache? There has to be a more reasonable way than hard resetting the phone and losing pretty much all settings again.
    Any hints highly appreciated.
    07-23-2016 05:45 AM
  2. Maurizio Troso's Avatar
    Hello.

    It seems I am experiencing a heavily corrupted icon / thumbnail / folder cache on my Lumia 950 XL, currently on Fast Ring build 10.0.14393.3.
    This corrupted thumbnail cache exists for a long time now for me, I want to avoid a hard reset just to reset the thumbnail cache at all costs. I also have file system access and tried to find the "IconCache.db" files and thumbcache files on the phone's internal storage, but no luck. In the desktop version of Windows 10 the thumbnails / icons are stored in

    C:\Users\**UserName**\AppData\Local

    in a file called "IconCache.db". This seems not to be the case in the mobile version.

    Many apps (like WhatsApp for example) are showing me folders and images which I have either moved or deleted.
    How can I delete / reset the cache? There has to be a more reasonable way than hard resetting the phone and losing pretty much all settings again.
    Any hints highly appreciated.
    A soft reset?
    Serious, any LiveTile is update after every app or build update.
    E.g. if you remove some pics from Favourites, you still will see them on Tile till next Photo app update... or Windows build update
    07-23-2016 12:18 PM
  3. Partybooper's Avatar
    Just tried a soft reset. As expected, didn't work.
    And this problem exists since many many builds and app updates. But the cache is still heavily corrupted.
    07-23-2016 01:34 PM
  4. Techno-Freak's Avatar
    Did you try clearing the temporary files from Storage? Sometimes that helps.
    Maurizio Troso likes this.
    07-25-2016 02:43 AM
  5. Chintan Gohel's Avatar
    Just tried a soft reset. As expected, didn't work.
    And this problem exists since many many builds and app updates. But the cache is still heavily corrupted.
    I can suggest you do a factory reset once the official anniversary update rolls out next week
    Maurizio Troso and i_hiker like this.
    07-25-2016 05:29 AM
  6. Partybooper's Avatar
    I can suggest you do a factory reset once the official anniversary update rolls out next week
    I still didn't give up on a more reasonable fix. I know I shouldn't have used insider builds on a productive phone, but well, I couldn't avoid it after I enrolled in the insider program with my 950 XL.

    But it's not just a problem with the insider builds. The thumbnail cache gets corrupted on public builds as well. It's not really a good solution to lose all data on the phone every time a small issue comes up due to having to perform a hard / factory reset.

    As I said I have (partial) access to the file system, all I need to do is to find out where the thumbnails are stored on the device (folder and file structure is different compared to the desktop OS, so it's not in the same location as I've described above), delete the file(s) and let the cache rebuild itself. I believe that should do the trick. A hard reset is the last option for me because it's very unreasonable and I cannot lose contacts, files and logs from customers / suppliers. So I'm stuck with this problem at the moment.
    Chintan Gohel likes this.
    07-31-2016 11:10 AM

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