A while ago I had a problem not being able to open files with Windows Store apps, specifically Serif Affinity suite. The issue was that these apps reside in folders containing version numbers so static links would be impossible as versions change. If I recall correctly, some Windows Store executables are not even possible/easy to locate (not sure if that was the particular case here but it doesn't matter).
I can't for the life of me remember where I got these IDL paths (here or Serif's forum), but they solved my issue.
Affinity Photo:
IDL:?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
Affinity Designer:
IDL:?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
Affinity Publisher:
IDL:?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
My question is basically, how do I grab these IDL paths for Microsoft Store apps and are they specific to Directory Opus? (I see they were discussed here and here for instance.)
My own research revealed that IDL stands for Interface Description Language (which is something that quickly rises above my head). So I asked this question, unrelated to DOpus on SuperUser. But the only reply I got so far implies that my question (getting permanent IDL path to Store app) wasn't answerable for some reason unbeknownst to me.