# Cells Sync can't connect to Docker on the same machine

**URL:** <https://forum.pydio.com/t/cells-sync-cant-connect-to-docker-on-the-same-machine/6536>\
**Category:** Sync Client\
**Created:** [February 7, 2025, 10:17am UTC](https://forum.pydio.com/t/cells-sync-cant-connect-to-docker-on-the-same-machine/6536 "2025-02-07T10:17:14Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![cyril](https://avatars.discourse-cdn.com/v4/letter/c/35a633/32.png) [@cyril](https://forum.pydio.com/u/cyril)\
**Post date:** [February 7, 2025, 10:17am UTC](https://forum.pydio.com/t/cells-sync-cant-connect-to-docker-on-the-same-machine/6536/1 "2025-02-07T10:17:14Z")

</div>

I would like to try Pydio Cell and the Sync client, so I installed it on a docker within my Windows machine.  
The communication through the web interface is working very well.

When using the Pydio Sync Client, I have different issues:

- Taking the default configuration ([https://localhost:8080](https://localhost:8080)) I receive a message telling that my certificate is signed by an unknown authority (which is true, it is an auto-certificate).
- When changing the configuration to disable the TLS certification, I receive a strange answer “No connection could be made because the target machine actively refused it” from the client.

Are there some options I missed, to connect Sync to the server?  
As explained above, I can access the server through the web interface.

Any help is welcome as on this stage the tool that seemed promising is not usable for our needs.

PS: I’ve created another topic, but on the wrong part some time ago, without much luck. I hope that I will be more lucky here 😋