Why do I get a 'Could not connect to server' error?

Why do I get a 'Could not connect to server' error?

If your Zoho WorkDrive TrueSync/Sync application displays the 'No internet connection' error, try the following solutions:



Check your connection settings

You might not be connected to the internet. Ensure your internet connection is active and working properly. You might also be facing an internet issue from your Internet Service Provider (ISP), so try reconnecting once your ISP problem resolves.

Change your firewall settings

In most cases, your firewall will allow the application to launch. However, if your security settings are rigid, you may to add Zoho WorkDrive to the firewall’s exception list/whitelist manually. To correct the issue:
  1. Go to your firewall’s settings.

  2. Add "*.zoho.com" as a trusted domain.

  3. Allow “Zoho WorkDrive” to access port 443 (HTTPS).

Check IP restriction

For cybersecurity, organizations whitelist (allow) certain IP addresses and block others. You can whitelist the IP ranges used in a particular Zoho datacenter (US/IN/AU/EU/CN/JP) to access your Zoho apps.

Zoho US DC (accounts.zoho.com)
204.141.42.0/23 
136.143.190.0/23 
136.143.186.0/23 
136.143.189.0/24 

204.141.32.0/23 
136.143.182.0/23 
136.143.180.0/23 
136.143.185.0/24 

Zoho IN DC (accounts.zoho.in)
169.148.148.0/23 
169.148.146.0/23 
103.103.196.0/24 
103.103.197.0/24 
103.117.158.0/24 
103.89.75.0/24     
125.17.151.81, 125.17.212.101
103.89.75.3, 103.89.75.7

169.148.148.0/23
103.103.198.0/24
103.117.159.0/24
103.89.74.0/24     
199.34.22.38
103.89.74.3, 103.89.74.7

Zoho AU DC (accounts.zoho.com.au)
101.97.36.0/24
103.138.128.0/23
  
103.91.166.0/24
165.173.191.0/24

Zoho EU DC (accounts.zoho.eu)
31.186.243.0 /24
185.20.209.0 /24
185.230.212.0 /23

87.252.213.0 /24
89.36.170.0 /24
185.230.214.0 /23

Zoho CN DC (accounts.zoho.com.cn)
163.53.93.0/24
163.53.94.0/27
118.126.63.128 /25
118.126.63.64 /26
103.212.59.96/29

124.251.121.0/24
124.251.122.0/25
124.251.128.0/24

Zoho JP DC (accounts.zoho.jp)
103.163.152.0/23
193.118.160.0/24
193.118.161.0/24

Check your proxy settings

By default, TrueSync/Sync uses your operating system's internet configuration to connect to the Zoho WorkDrive cloud. Check your proxy setting to ensure Zoho is not being blocked. You can also manually enter proxy settings in the WorkDrive TrueSync/Sync preferences tab as follows:
  1. Click on the WorkDrive TrueSync/Sync icon in your System Tray/Menu Bar.
  2. Select the Settings icon.
  3. Go to Network. By default, WorkDrive TrueSync/Sync will have the network settings set to “Automatically detect proxy settings”.
  4. Select Manually enter proxy settings (HTTP).
  5. Enter the server and port number.
  6. If the proxy needs to be validated, check the Proxy server require authentication box.
  7. Enter your username and password.
  8. Click Apply.

Correct your system date and time

If your system's date and time is not set properly, or doesn't match the current date and time, a SSL certificate error will occur, preventing Zoho from establishing a secure connection.