A while ago, I wrote a blog about the error message ‘Application can’t be started… (Instant Passthru could not be resolved)’ that we encountered when launching a published application from our Ivanti Workspace Control managed session. Recently, we received the same message again, but this time the cause was different.

Application can’t be started… (Instant Passthru could not be resolved)

Shortly after a relatively simple task—upgrading an outdated version of Citrix Workspace App (CWA) from 1912 LTSR to the slightly newer 2203 LTSR—we encountered some inexplicable issues that made it impossible to launch Citrix Published Apps via SelfService.exe.

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