Field Service Contractor Plus users authenticate successfully into the Salesforce Field Service Mobile app (FSM) using the Experience Cloud community site URL as the Custom Host (for example, your-domain.my.site.com/contractors) — this is the correct and expected login URL for Partner Community users. However, instead of seeing the native Driver App UI (Clock In, schedule, job management), the app displays the Experience Cloud community home page rendered in a webview.
Internal users with full Salesforce licenses use the org domain (your-domain.my.salesforce.com) as the Custom Host and see the native Driver App UI. Partner Community users must use the community site URL — but when the correct permissions are not configured, the FSM app falls back to rendering the Experience Cloud webview instead of the native UI.
This article covers Salesforce Field Service Mobile app Custom Host configuration and permission set requirements for Partner Community users with Contractor Plus licenses to access the native Driver App UI. For general Partner Community authentication issues or data sync problems, see related articles.
• Partner Community users log into Field Service Mobile app successfully
• App displays Experience Cloud community page in webview format
• Native Driver App UI (Clock In, schedule, job details) does not appear
• Internal users with full licenses see native UI correctly
• Authentication completes but wrong interface renders
• Login errors may appear after clearing cached sessions if the user's default login is tied to the Experience Cloud site
The community site URL (for example, your-domain.my.site.com/contractors) is the correct and required Custom Host for Partner Community users in the Field Service Mobile app. The webview rendering issue is not caused by the URL itself — it is caused by missing or incomplete permission configuration on the contractor user.
The native Driver App UI requires all of the following to be configured correctly:
This is the critical missing step that is most commonly overlooked — permission sets assigned via a Permission Set Group (PSG) may not include this specific permission set.
Ensure the contractor user has all of the following:
The Custom Host for Partner Community users in the Field Service Mobile app must be the Experience Cloud community site URL — not the org domain. Ensure the Custom Host is set correctly.
After logging in with the community site URL as the Custom Host and all permissions correctly assigned, the native Driver App UI with Clock In, schedule, and job management features should appear.
Note on Password Reset: If a password reset email redirects the user to the Experience Cloud site login rather than the app, this is expected behavior for community users. The user can proceed to log in normally via the community URL in the FSL app.
005384624

We use three kinds of cookies on our websites: required, functional, and advertising. You can choose whether functional and advertising cookies apply. Click on the different cookie categories to find out more about each category and to change the default settings.
Privacy Statement
Required cookies are necessary for basic website functionality. Some examples include: session cookies needed to transmit the website, authentication cookies, and security cookies.
Functional cookies enhance functions, performance, and services on the website. Some examples include: cookies used to analyze site traffic, cookies used for market research, and cookies used to display advertising that is not directed to a particular individual.
Advertising cookies track activity across websites in order to understand a viewer’s interests, and direct them specific marketing. Some examples include: cookies used for remarketing, or interest-based advertising.