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Adobe Photoshop CS (v8.x) no longer supports displaying PSD files as thumbnails in Windows Explorer’s thumbnail view, all you get is a standard Photoshop icon.

If you have upgraded from a previous version of Photoshop to Photoshop CS you will be OK but a fresh install of CS will NOT included thumbnail previews of PSDs. However I have discovered how to fix this, all we need is a missing DLL to be placed in the right folder.

1. Download psicon.dll from DLL Dump
2. Place the DLL in C:\Program Files\Common Files\Adobe\Shell\
3. Thumbnail previews of PSD files are now back