I tried everything to solve issue with Huawei Share and make connection between P30 (Emui 10.1) and PC, but without succees. I tried to enable it on two separated Laptops the first one with Windows 10 32 bit and the other one with Windows 10 64 bit.
Hope and really beleive that Huawei will fix that in further Emui builds.
In the meantime you can use that aplication
Check out "ShareMe - #1 file sharing & data transfer app"
https://play.google.com/store/apps/details?id=com.xiaomi.midrop