Troubleshooting

Action Center installation troubleshooting

This page provides a list of the most common installation issues and the corresponding fixes.

If the issue you're facing is not in the list, contact our support team.

Installation successful, but you cannot access Action Center

Description: Installation completed successfully, but you cannot access Action Center.

Remedy:

1. Install the ASP.NET Hosting Bundle:

• minimum version 3.1.x, available here or,
• version 5.0.x, available here.

Cannot access Action Center using the load balancer URL

Description: You cannot access Action Center using the load balancer URL.

Remedy:

1. For each Action Center node specify their corresponding hostname and portin the Action Center IIS Settings screen.
2. Update the common load balancer URL with the Action Center URL (for example, https://action-center.domain.com) in the Action Center UiPath Identity Settings screen.

Unregistered Client Error

Description: When accessing Action Center using the load balancer URL, Identity Server responds with the Unregistered Client Error message.

Remedy:

1. Update the Subject Alternative Name (SAN) to include all node and load balancer host names:

• use a wildcard pattern such as DNS Name = *.domain.com, or
• specify each hostname in the SAN

Image or PDF files not loading in forms.

Description: Image or PDF files are not loading inside Form Actions.

Remedy

1. Verify the <appSettings> property in the UiPath.Orchestrator.dll.config file and make sure that:

• the value of the AcceptedRootUrls key does not include space characters,
• the port value for Action Center URL is specified only when it is different than 80 or 443 (default ports).

Action Center not loading, because of 404 response code

Description: Action Center does not load because .json and .woff2 MIME types used by the Action Center WebApp provide a 404 response code

Remedy:

1. For each Action Center node, add the .json and .woff2 MIME types in IIS > Mime types > Add:

• File name extension: .json, MIME type: application/json.
• File name extension: .woff2, MIME type: application/font-woff2.

PaaS installation using Terraform

Description This issue occurs for PaaS installations run through Terraform. Installation completed successfully, however, Action Center does not load and displays the following message: "You do not have permissions to view this directory or page".

Remedy: Add index.html in the Default documents section of your cloud provider:

1. Go to your App Services in Azure.
2. Navigate to Settings.
3. Open the Configuration page.
4. Switch to the Default documents tab.
5. Click + New Document.
6. Add index.html.

Upgrading successful, cannot access Action Center via Load Balancer URL

Description: Upgrading to higher versions of Action Center was successful, but cannot access Action Center via the load balancer URL. This issue applies if the Host URL is different than the load balancer URL.

This issue also applies if the DNS name is different than the machine name.

Remedy:

1. In the ActionCenter/Actions/environments/env.json key, manually update the values for businessUserPortalProxyServiceUrl and postLogoutRedirectUri to the correct load balancer URL.
2. In the ActionCenter/Processes/environments/env.json key, manually update the values for businessUserPortalProxyServiceUrl and postLogoutRedirectUri to the correct load balancer URL.

Upgrade successful, cannot access Action Center

Description: After upgrading Action Center from 2021.4 to 2022.10, the access is blocked by the CORS policy.

• Event log error - IdentityServer4.Hosting.CorsPolicyProvider CorsPolicyService did not allow origin.
• Console error - Access to XMLHttpRequest at '<changed_action_center_url>/actioncenterservice/feature/features/ActionApp' from origin '<action_center_url>' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: The 'Access-Control-Allow-Origin' header has a value '<action_center_url>' that is not equal to the supplied origin.

Cause: The Action Center URL changed its value inside the Registry after upgrading to a higher version.

Remedy:

1. Update the Action Center URL with the correct value for Actions:

   • Go to the ActionCenter/Actions/environments/env.json file path.

   • Change the value for action_center_url inside the "businessUserPortalProxyServiceUrl" key.

     The format for the "businessUserPortalProxyServiceUrl" key is <actioncenter url>/actioncenterservice.

   • Change the value for action_center_url inside the "postLogoutRedirectUri" key.

     The format for the postLogoutRedirectUri is <action_center_url>/actions.

2. Update the Action Center URL with the correct value for Processes:

   • Go to the ActionCenter/Processes/environments/env.json file path.

   • Change the value for action_center_url inside the "businessUserPortalProxyServiceUrl" key.

     The format for the "businessUserPortalProxyServiceUrl" key is <actioncenter url>/actioncenterservice.

   • Change the value for action_center_url inside the postLogoutRedirectUri key.

     The format for the postLogoutRedirectUri is <action_center_url>/processes.

Access to XMLHttpRequest has been blocked by CORS policy

Description: You're using Orchestrator storage buckets, and when you try to access document validation actions, the following errors are thrown:

• Could not connect to the server
• An error occurred while retrieving the DOM (Document Object Model)

Cause: The <cors> section in Orchestrator's web.config file overrides the Action Center URL that you input in the "AcceptedRootUrls" key from the UiPath.Orchestrator.dll.config file.

Remedy: Perform the following steps to fix the issue:

1. Open the web.config file from Orchestrator.
2. Find a section that contains <cors>.
3. If this section exists, then add the Action Center URL in this section, as well.