Windows Defender needs new data as new trojans and more come out.
https://www.google.com/search?q=how+many+new+virus+a+day is a shocker to some.
To keep up, the database is updated often.
KB2267602 - 10/29 one update
10/30 - one update
10/31 - one update
11/1 - two updates
11/2 - 10 updates
11/3 - 12 updates
11/4 - 12 updates
11/5 - 9 updates
11/6 - 8 updates.
Or is it just my computer. Windows 10 64 bit
Ran a "full" scan this morning, didn't find anything.
Thanks in advance

Chowhound
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