This works for Windows 7, 8, 8.1 & 10.Windows.edb is a history of your searches and the records from indexing your drives & files.You don't need to do anything if you have turned... moreThis works for Windows 7, 8, 8.1 & 10.Windows.edb is a history of your searches and the records from indexing your drives & files.You don't need to do anything if you have turned off indexing & Windows Search. If you haven'tturned them off it can be a HUGE file on your C drive or primary Windows OS drive. 5 to 15+gigsdepending on how much you use windows search.It is 100% safe to delete but if you use it? Windows will need to start all over indexing and saving new searches so your searches will be very slow. Disabling indexing also makes your searchesvery slow unless your have really fast drives. 4,000 MB/s or faster you won't see a slow down mostnon-raid, non-ssd drives run around 20 to 60 MB/s, SSD's non-raid 250 to 500 MB/s, M.2 SSD's 1,100to 2,500 MB/s, SSD's Raid-0 8,000 to 12,000 MB/s.To delete it:1.) Open "System Services" scroll down look for "Windows Search" right click select "stop"(Leave "System Services" open)2.) Go to C:\ProgramData\Microsoft\Search\Data\Applications\Windows - delete... less