A few days ago, accessing the control panel, windows 7 windows update I discovered that the last update installed was found to be "never." I took a look at history: completely empty! If you check the installed updates, I will show four, the first of which dated December 8. Of all that has happened "before", I have lost the track. Today I did update and also I have installed an update to Windows Defender, which went directly into history now shows that such an update (the only one!). What may be the result? I just want to know here that this can be restored in some way history?