# CellsSync only add folder but no file uploaded

**URL:** https://forum.pydio.com/t/cellssync-only-add-folder-but-no-file-uploaded/4155
**Category:** Sync Client
**Created:** [November 16, 2021, 3:14am UTC](https://forum.pydio.com/t/cellssync-only-add-folder-but-no-file-uploaded/4155 "2021-11-16T03:14:19Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![lex](https://avatars.discourse-cdn.com/v4/letter/l/c68b51/32.png) [@lex](https://forum.pydio.com/u/lex)
#### Post date: [November 16, 2021, 3:14am UTC](https://forum.pydio.com/t/cellssync-only-add-folder-but-no-file-uploaded/4155/1 "2021-11-16T03:14:19Z")

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Server (empty)  
OS: win10  
Pydio: 3.0.1  
IP Port: 192.168.1.121:8080  
Exteral Port: XXXdomain: 33333  
Sync Folder: Keep data structure

Client (files)  
OS: win7  
CellsSync: 0.9.2  
IP: 192.168.1.120

Hosts setup on both side: 192.168.1.121 [www.bbb.com](http://www.bbb.com)  
(file: C:\Windows\System32\drivers\etc\hosts )

1. Actually server & client in the same network, I can run sync perfectly via Exteral Domain/Port.

2. But when I do the sync directly within local network (via [www.bbb.com](http://www.bbb.com)), only folder added to server, no file uploaded.

3. And if I login via server ip: 192.168.1.121, I got “cannot connect to discovery endpoint: Get [https://192.168.1.121:8080/a/config/discovery:](https://192.168.1.121:8080/a/config/discovery:) x509: certificate is valid for 127.0.0.1, ::1, 192.168.1.121, not 192.168.1.121” when I select server path during task creating.

Certificate Info ( certificate key installed on both pc, browser shows correct https site )  
 ![image](https://canada1.discourse-cdn.com/flex032/uploads/pydio/original/2X/d/d3aed9fd4ac9ff40c95f44f1b4ba152cc881c182.png)

Now, 3 ways: external domain name, local domain name, local ip.  
only the first one works properly.

I think sync within local network means faster, so what I did wrong or something more I need to do ?

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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: [January 12, 2022, 11:39am UTC](https://forum.pydio.com/t/cellssync-only-add-folder-but-no-file-uploaded/4155/2 "2022-01-12T11:39:07Z")

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Hello @lex ,

the error points to an issue with the certificate, maybe on your internal network you might be using a self-signed certificate which cells-sync does not know, you could add the root ca to the machine using cells-sync.

- retrieve the root ca of your cells-server
- add it to the certificates of your machine running cells-sync.