I have tried using Disk Analyzer to find large files on my HD. But the reported file sizes are extremely large and wrong. I have a 500GB SSD, but for example, the Pictures file types are reported as total of 962,609,651,331.62 MB, and an individual file is reported as 29,961,691,856,896 KB, etc. The total of All Categories is correctly reported as 476,549.05 MB
I have this issue too, Surface Pro 5