Web Client Login Errors

This article will provide a walkthrough on how to troubleshoot various login errors when using the 1Stream softphone web client.

Updated at November 1st, 2026

Table of Contents

Troubleshooting Web Client Login Errors

The steps below will provide assistance in troubleshooting the common errors found when users try to log into the 1Stream softphone web client. 

Check the User Binding 

All users listed in control under Settings> Users must be matched to an extension on an accompanying phone system. For instructions on how to bind users, please see our Setting User Bindings article. 

Extension Web Client Enabled

Ensure that the Web Client option is enabled for the affected extension. 

 

Clear Browser Cache

Clearing the browser cache can remove conflicting cookies and data that would prevent the web client from operating as expected. Opening the web client in an incognito window can also confirm if cache is affecting you. 

Try Another Browser

Some browsers can conflict with the web client softphone. For a list of recommended browsers, please see our Compatible Browsers article.

Whitelist the Local IP

Whitelisting the local IP of the device or network can help any local blockages. Steps for whitelisting can be found in our Whitelisting IPs article.