Settings to Windows Firewall to allow Docker for Windows to share drive

Question

Windows Firewall is blocking my attempt to allows Docker for Windows to share C: on windows 10 machine.

Works fine when Windows Firewall off. When its on I get

Answer 1

I had this problem with Kaspersky; turning off Kaspersky worked, so I knew it was the firewall. In my case, Kaspersky was already blocking port 445 for some reason. I had to go to Packet Rules for the Firewall, Local Services (TCP) and remove 445 from the list of blocks ports.

Answer 2

For AVG Internet Security, enabling Internet Connection Sharing Mode under the Firewall settings did the trick for me.

Answer 3

Only this solution helps me:

• Go to Hyper-V Manager -> Virtual Switch Manager -> DockerNAT -> Connection Type: change from internal to private, apply, change back to internal, apply
• Restart MobyLinuxVM
• Restart Docker
• Set Docker network profile to 'Private'. Run command in PowerShell as admin
  Set-NetConnectionProfile -interfacealias "vEthernet (DockerNAT)" -NetworkCategory Private
• Reset File and Printer Sharing for Microsoft Networks on DockerNAT connection
• Go to Docker -> Settings -> Shared Drives and share C:

Answer 4

None of the above worked for me.

What finally did the trick was opening the properties of the "vEthernet (DockerNAT)" network and ticking the box "Hyper-V Extensible Virtual Switch" at the bottom of the list under the "Networking" tab.

Not sure if this is the actual fix or whether it just somehow reset the network adapter for me... but it worked!

Answer 5

for those who can not solve this issue by any means, you can try this: manually map drive into the docker host:

https://github.com/docker/for-win/issues/466#issuecomment-416682825

The research is here: https://github.com/docker/for-win/issues/466#issuecomment-398305463

Answer 6

In short, use the Edge version.

The Edge version of Docker for Windows since 2.1.5.0 (2019-11-04) has a new implementation of file sharing without requiring firewall modifications https://docs.docker.com/docker-for-windows/edge-release-notes/

"New file sharing implementation: Docker Desktop introduces a new file sharing implementation which uses gRPC, FUSE, and Hypervisor sockets instead of Samba, CIFS, and Hyper-V networking. The new implementation offers improved I/O performance. Additionally, when using the new file system:

Users don’t have to expose the Samba port, and therefore do not experience issues related to IT firewall or the drive-sharing policy.
There is no need to provide user credentials to Docker Desktop. File access rights are automatically enforced when accessing mounted folders through containers.

"

You can download the edge version: https://download.docker.com/win/edge/Docker%20Desktop%20Installer.exe

Note as of now, the edge version of 2.1.7.0 will be used for next stable release: "Note: Docker Desktop Edge 2.1.7.0 is the release candidate for the upcoming major Stable release.". So the risk of using Edge is relatively low. Or you can wait for next stable release, to avoid all these firewall issues.