
We recommend migrating from the XenApp Services URL to the Store URL (highlighted below). Each XenApp Services URL already has a corresponding Store URL associated with it.

Additionally, you must reconfigure Citrix Workspace App to reflect the Store URL.
The steps to do this depend on the following:
GPO: If the PNAgent store was configured using GPO, exit Workspace app, remove “PNAgent” URL from GPO settings and use store discovery URL, for example https://storefront.example.com/citrix/store/discovery
Below are the steps to change the GPO:
Open the Citrix Workspace app Group Policy Object administrative template by running gpedit.msc.
Under the Computer Configuration node, go to Administrative Templates > Classic Administrative Templates (ADM) > Citrix Components > Citrix Workspace > StoreFront.
Select Citrix Gateway URL/StoreFront Accounts List.
Select the Enabled option and click Show. If you enable this policy setting, you can enter a list of StoreFront Accounts and NetScaler Gateway URL.
Enter the URL in the Value field.
Specify the store URL that is used with the Citrix Workspace app:
STOREx="storename;http[s]://servername.domain/citrix/<storename>/discovery;[On, Off]; [storedescription]"
Manual: If the PNAgent store was configured manually, then the user has to
Either manually remove the store or select ‘Reset Workspace App’
Add the storefront URL. For example https://storefront.example.com/citrix/store/discovery
Two options are available if the store was configured using the installer command line.
Option 1:
Uninstall the existing version.
Install with the store added in the cmd line as mentioned in https://docs.citrix.com/en-us/citrix-workspace-app-for-windows/install.html#examples-of-store-configuration-using-command-line-installation
Option 2:
You can use cleaninstall parameter as mentioned in https://docs.citrix.com/en-us/citrix-workspace-app-for-windows/install.html#command-to-cleanup-and-install-citrix-workspace-app to combine both the steps above
If you are using HTTP only URL, then follow the steps mentioned in the article - https://support.citrix.com/s/article/CTX134341-how-to-configure-citrix-receiver-for-windows-to-manually-add-http-stores?language=en_US
If you are using the domain pass-through auth method, you need to add the store URL to an intranet or trusted zones as mentioned in https://docs.citrix.com/en-us/citrix-workspace-app-for-windows/authentication#modify-the-internet-explorer-settings
If you are using the command line, you need to add the store URL as mentioned in https://support.citrix.com/external/article/CTX200337/driving-the-citrix-receiver-selfservice.html
CWA 2403 onwards, the support for “PNAgent” has been deprecated and removed.
https://docs.citrix.com/en-us/citrix-workspace-app-for-windows/deprecation.html

Configuring PNAgent stores (e.g., https://url/citrix/store/pnagent/config.xml), causes Citrix Workspace App for Windows (version 2409 or later) to display below error message on refresh or sign-in stating, “To resolve this issue, contact your helpdesk with this information: Error while parsing.”