I did an Azcopy command
azcopy copy "C:\local\path" "https://account.blob.core.windows.net/mycontainer1/?sv=2018-03-28&ss=bjqt&srt=sco&sp=rwddgcup&se=2019-05-01T05:01:17Z&st=2019-04-30T21:01:17Z&spr=https&sig=MGCXiyEzbtttkr3ewJIh2AR8KrghSy1DGM9ovN734bQF4%3D" --recursive=true
But it shows "INFO: Scanning.." for a long time
"INFO: Scanning" is a standard message for almost all errors that can happen. This has got many people confused into thinking some sort of scanning is going on and that we need to wait. But actually it could be some other simple error like incorrect blob name or container name as was in my case.
EDIT: to learn about the actual error and location check the answer in this page from Gpack.