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You could try this setting…should also work for PubApps. https://support.citrix.com/article/CTX221222/published-desktop-is-launched-in-background-of-local-applications

just tried. did not work. There is a browser that is supposed to pop up during office registration and it does not.

Maybe you run into this one: https://support.citrix.com/article/CTX267071/password-field-not-displayed-when-publish[…]lication-such-as-excel-or-word-on-server-2019-or-windows-10

@Markus Zehnle THANK YOU!!! that fixed it.