Getting error from sender <path>: Access is denied. When context is being transferred on Windows 10 and path is longer than 260 characters

[wholenewstrain]

$ docker version
Client: Docker Engine - Community
Version: 18.09.2
API version: 1.39
Go version: go1.10.8
Git commit: 6247962
Built: Sun Feb 10 04:12:31 2019
OS/Arch: windows/amd64
Experimental: false

Server: Docker Engine - Community
Engine:
Version: 18.09.2
API version: 1.39 (minimum version 1.12)
Go version: go1.10.6
Git commit: 6247962
Built: Sun Feb 10 04:13:06 2019
OS/Arch: linux/amd64
Experimental: false

[wholenewstrain]

Steps to re-create:
Enable long paths on Windows 10
Create a long path in a project, longer than 260 characters \aaa\bbb\ccc .....
Create a Dockerfile and make sure context will include the created long path
Enable build kit

Run docker build -f Dockerfile .
Getting Access denied error when sending context

Sample (used 7zip):
EnableLongPaths.zip
long-paths-error-sample.zip

[profnandaa]

Looks like the second zip file is corrupted. Is it possible to share your dockerfile?

[profnandaa]

Duplicate of #1366 -- no longer repro, seems it was fixed along the way.