Troubleshooting

Other Problems

•Are files taking too long to generate? Some file types are much slower than others in generating thumbnails, specifically PDF, and some other postscript file types. This is due to having to use Ghostscript to render them and it’s not especially fast. Perhaps you could disable these file types or try using the embedded thumbnail option if the file type(s) supports it. You can tell if a file format supports embedded thumbnails if you set the control panel apply to mode to either file format or file extension mode, and checking if the embedded thumbnail option is disabled (grayed out).

•Are thumbnails rebuilding every time you open a File Explorer window? If they are - then you need to clear your thumbnail cache. As mentioned, the Windows thumbnail cache is a managed black box and sometimes gets corrupted and a clean is the only way to fix it. If you see files that should already have a thumbnail rebuilding thumbnails each time you open a folder again, then clear the thumbnail cache.

•Are your files particularly large in file size? That obviously can slow down thumbnail performance. Perhaps try setting the file or image dimensions performance options for that file type.

•Do you have small icons enabled? If you don’t need them - disable them (which is default) as they just add extra processing time.