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Fix Power Apps SharePoint Form Refused to Connect in Edge and Chrome

Maira MehtabMaira Mehtab Sep 20, 2026 869 views

Question details

Users are encountering a persistent connection error when attempting to load Power Apps forms integrated with SharePoint lists.

Product
Power Apps, SharePoint, Edge, Chrome
Device & OS
not provided
Scenario
Accessing Power Apps integrated forms within SharePoint after a recent Microsoft system update.
Observed behavior
The browser displays an 'apps.powerapps.com refused to connect' error. Clearing the browser cache and cookies only provides temporary relief before the error returns.
Before you start

Ensure you have administrative privileges to modify browser privacy settings and access your organization's endpoint security software configurations.

Solution 1Recommended

Add Exceptions in Endpoint Security Software

Configure your endpoint security product (such as WithSecure Elements) to prevent it from blocking SharePoint or Power Apps content.

Endpoint security software and strict web content-control policies can sometimes misidentify cross-domain integrations as tracking or malicious behavior. Whitelisting the required Microsoft domains usually resolves this.

1
Open Security Console

Log in to your endpoint security management dashboard (e.g., WithSecure Elements) using an administrator account.

2
Locate Content Policies

Navigate to the web protection, content-control policies, or firewall exception settings.

3
Whitelist Domains

Add exceptions to allow traffic and scripts from both the SharePoint and Power Apps domains.

4
Apply and Test

Save your newly configured policies, wait for them to propagate to the endpoint, and refresh the browser to test the form.

Domain Exceptions: Be sure to include both the specific SharePoint tenant URL and the apps.powerapps.com domain in your allowlist.
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Frequently Asked Questions

Why does clearing the browser cache only temporarily fix the Power Apps error?

Clearing the cache temporarily resets your browser state, but if the underlying endpoint security policy or browser tracking-prevention setting is still active, it will eventually re-block the necessary Power Apps cookies or cross-site data, causing the error to return.

Which domains need to be whitelisted for Power Apps in SharePoint?

To ensure smooth operation, you generally need to whitelist your specific SharePoint tenant URL (e.g., yourcompany.sharepoint.com) as well as apps.powerapps.com and related Microsoft authentication domains in your firewall or endpoint security software.

Can recent Microsoft Windows updates cause browser connection issues?

Yes, system updates can sometimes reset browser privacy settings to their defaults or introduce stricter tracking prevention protocols that inadvertently block legitimate cross-domain integrations like Power Apps embedded in SharePoint.

How do I stop Edge from blocking SharePoint embedded forms?

Open Edge Settings, navigate to 'Privacy, search, and services', and ensure your Tracking Prevention is set to 'Balanced'. Additionally, ensure you are not blocking third-party cookies for the SharePoint and Power Apps domains.