I stick with the help recommendations--scheduled quickscans, and a full scan
on occasion, especially if something appears to be wrong. A full scan can
take a long time, and it will likely find some stuff which while genuinely
malware, isn't a threat--in the TIF, or in a restore point. Do the full
scans via the UI as Dave's shown, and leave the schedule as quickscan. You
should be able to schedule fullscans, however--if that isn't working,
running a repair of Defender might be in order--control panel, add or remove
programs, windows defender, change, update.
--
"River Rat" <(E-Mail Removed)> wrote in message
news

89FFE06-D1BF-4BCA-B602-(E-Mail Removed)...
> How do you manually force a full scan?
> I haven't found the protocol for doing that yet.
>
> "Robinb" wrote:
>
>> it defaults to quick scan.
>> It takes a long time depending on your the size of your hd and how much
>> is
>> used to do a full scan so MS tells us if you want to do a full scan then
>> manually do it but the default is a quck scan.
>> robin
>> "River Rat" <(E-Mail Removed)> wrote in message
>> news:0D3E55CE-B992-4ADF-8044-(E-Mail Removed)...
>> > I recently installed Defender. I ran the default Quick Scan and all was
>> > well. Then I wanted to try the Full Scan to see if there was nything
>> > lurking
>> > around that Full Scan might discover. I set the Options to Full Scan
>> > and
>> > closed Defender. When I open Defender again it shows Full Scan as the
>> > selection.
>> >
>> > BUT it always runs in Quick Scan mode. Why won't it run Full Scan?
>> >
>> > River Rat
>>
>>
>>