# \[Solved\] Cells Sync does not want to work with Pydio Cells 2.0.4 (windows server)

**URL:** <https://forum.pydio.com/t/solved-cells-sync-does-not-want-to-work-with-pydio-cells-2-0-4-windows-server/3154>\
**Category:** Sync Client\
**Created:** [March 20, 2020, 1:27pm UTC](https://forum.pydio.com/t/solved-cells-sync-does-not-want-to-work-with-pydio-cells-2-0-4-windows-server/3154 "2020-03-20T13:27:38Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Gawie-Schneider](https://yyz2.discourse-cdn.com/flex032/user_avatar/forum.pydio.com/gawie-schneider/32/1130_2.png) [@Gawie-Schneider](https://forum.pydio.com/u/Gawie-Schneider)\
**Post date:** [March 20, 2020, 1:27pm UTC](https://forum.pydio.com/t/solved-cells-sync-does-not-want-to-work-with-pydio-cells-2-0-4-windows-server/3154/1 "2020-03-20T13:27:39Z")

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I have attached a photo of my problem.

I installed Pydio Cells Server 2.0.4 on my Windows Server 2016 machine with MySQL 8.  
During my installation, I had to create a cert and key using openssl and attach them to the installation.  
Although my cert is not a trusted CA, I am able to access the service from my local machine once I accept the risk (using chrome)

On Cells Sync I could manage to add the user, however once I try to “download” the folder structure from the server, I get the attached error:  
_“the gRPC port may not be correctly opened in the server”_

I have tried numerous approaches, using TLS and not, opening the required ports on the firewall etc, however to no avail.

I now ask the community for help as I’m out of ideas

Gawie

 ![chrome_GUV6h1UgVB](https://canada1.discourse-cdn.com/flex032/uploads/pydio/original/2X/c/cc713f2f2493f537eb67008e78a0f11fc1fe3e40.png)

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**Author:** ![zayn](https://avatars.discourse-cdn.com/v4/letter/z/a87d85/32.png) [@zayn](https://forum.pydio.com/u/zayn)\
**Post date:** [March 20, 2020, 2:09pm UTC](https://forum.pydio.com/t/solved-cells-sync-does-not-want-to-work-with-pydio-cells-2-0-4-windows-server/3154/2 "2020-03-20T14:09:08Z")

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Hello @Gawie-Schneider,

Could you answer a couple of question to help me have an idea about your setup.

- Are you using Cells behind a reverse proxy?
- Are you using a self-signed or a certificate from a know authority?

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**Author:** ![Gawie-Schneider](https://yyz2.discourse-cdn.com/flex032/user_avatar/forum.pydio.com/gawie-schneider/32/1130_2.png) [@Gawie-Schneider](https://forum.pydio.com/u/Gawie-Schneider)\
**Post date:** [March 20, 2020, 2:12pm UTC](https://forum.pydio.com/t/solved-cells-sync-does-not-want-to-work-with-pydio-cells-2-0-4-windows-server/3154/3 "2020-03-20T14:12:41Z")

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Hi Zayn,

as I’ve mentioned, I’m using a self signed certificate I created with OpenSSL.

It would seem though however I’ve managed to bypass this by downloading an unofficial updated version of the Cells Sync application from here

[https://download.pydio.com/pub/cells-sync/release/0.9.2-dev.20191219/windows-amd64/](https://download.pydio.com/pub/cells-sync/release/0.9.2-dev.20191219/windows-amd64/)

I was now able to download folders, and successfully sync

Gawie

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**Author:** ![zayn](https://avatars.discourse-cdn.com/v4/letter/z/a87d85/32.png) [@zayn](https://forum.pydio.com/u/zayn)\
**Post date:** [March 24, 2020, 8:40am UTC](https://forum.pydio.com/t/solved-cells-sync-does-not-want-to-work-with-pydio-cells-2-0-4-windows-server/3154/4 "2020-03-24T08:40:15Z")

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