If you have installed the Diablo Retail version, download and apply the Retail patch ( Windows | Mac). If you have installed the Diablo Spawn version, download and apply the Spawn patch ( Windows). Furthermore patch 1.09b is download only, not an automatic update, but according to the change log the only update was 'Fixed sound problem with Windows NT 4.' so no need to update. The latest patch allows Diablo 1 to be played on everything up to Windows 10 currently without the previous explorer issues that plagued us.īlizzard has posted the 1.0.9 Patch on their site (As pasted below), although the latest patch is actually 1.0.9b, but for some reason they don't seem to have 1.0.9b listed. Also just a note, you do not need to use any Windows Compatibility modes or change the resolution. To play the game without the disc apply the 1.0.9 patch from below and copy the DIABDAT.MPQ from the disc to the install directory as chiefqualakon as already mentioned.