I recently noticed the Diskspace on my laptop had dropped quite dramatically (Around 20GB). I ran the Disk Clean Up to see if that improved things, however it only freed a couple of Gigs.
Keen to see what was eating space I installed TreeSize Professional.
TreeSize Professional shows that my C: drive is using 81.0GB - Which seems about right, however windows reports I am using 106GB - a 25GB difference.
Is anyone able to provide an explanation?

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