![]() Well, rebuilding the icon cache is easy in Windows 11, though the method has changed from Windows 7 and 8.1. The sole reason why it’s done is to make Windows draw the icons faster. It uses it to draw icons on the screen for apps such as explorer instead of getting the image from the original application. The icon cache or iconcache.db is a special database file which is kept by Windows. In that case, what you need to do is to rebuild the thumbnail cache in order to get the thumbnails back. This means that the thumbnail cache has been corrupted as well. As such, the same thing can happen with thumbnails too which may result in them becoming blurry or not showing up at all. Windows 11Īs it turns out, similar to the icon cache, there is a cache for thumbnails as well. Therefore, in this article, we are going to show you how to rebuild your icon cache if you are in such a scenario. In such a scenario, you will have to delete the icon cache so that it is rebuilt automatically by Windows. However, in some cases, the icon cache can get corrupted or damaged which can result in the icons of the different files being incorrect and weird. This helps in letting the operating system quickly display the icons instead of scanning the files each time, thus, the process is sped up. Strangely, I found that this file contains many embedded images.The icons that are shown on your screen for different file types are essentially saved in an icon cache on your computer. Sorry to resurrect a post from few years back. In Windows 8 and 8.1 each file should be 8MB so to reach that total there must Just to confirm, the problem you're observing is with the sheer number of files, correct? In other words, the 50+ GB you mention must be the total size for all the files. It may also be valuable if a user profile delete could clean these files up. As for the number of days old, that could be tricky, either a cleanup item on user logoff or a background process that ![]() Implies keep forever, 0 delete immediately on user logoff, any value over 0 specifies the number of days old the files may be. Or maybe a setting option to delete files older than a certain number of days, where the reg entry of null HKLM policy/reg setting that applies to all users or HKCU, to purge the files on log off. This thread has some age to it, so do not know if you've coded anything yet, but I may be ideal to code this as either a simple registry entry setting, which an administrator could modify directly or via GPO registry modification and/or have the item addedĪs a true Group Policy handled modification. I'll be implementing a folder cleanup for these files as part of our weekly reboot maintenance, so not a huge deal there. I narrowed it down to these exact same files both FontCache-S-*.dat and ~FontCache-S-*.dat. Systematically performing properties through the file system ![]() I had noticed a large disparity between C: disk space usage across our fleet. I work at a large well known medical institution with literally hundreds of 2k8r2 RDS and Citrix servers. I hope this information is helpful, and thanks in advance for any input you may have. Is this the sort of thing you'd want to be able to configure? As far as space, what would you personally consider excessive and E.g., should it be strictly time-based or should there alsoīe a cap on total disk usage? Do the servers in question tend to have just a few regular users and lots of infrequent or one-time users? A time-based policy might work well if that's the case. I'd be interested in any input that might help me decide on a reasonable clean-up policy. I'm investigating handling this kind of maintenance automatically in the next version of Windows AFTER 8.1. For example, you could create a scheduled maintenance task that automatically deletes all the FontCache-S-*.dat files if their total size exceeds a certain amount. Unfortunately, the Font Cache service does not automatically delete old per-user cache files so for now I'm afraid you'll have to In Windows 8 and 8.1 each file should be 8MB so to reach that total there must be thousandsĪs you've guessed, these files are per-user, so if many people log on to a server you could end up with many of these files. The service will simply recreate them as needed. ![]() I am the developer for that service, and can confirm what Chris said above. These FontCache-S-*.dat files are created by the Windows Font Cache service. Hi, I'd just like to expand a little on what Chris Cai said above.
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