Archived technical overview explains threading models and how to prevent COM call hangs.
Why UI threads are STA, how marshaling across apartments works, and why COM calls hang without message pumping - with diagrams and a deadlock example. Archived version of https://comcomponent.com/en/blog/2026/01/31/000-sta-mta-com-relationship/, as published on 2026-07-27. The live article is maintained and may change after this date. First published 2026-01-31.
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Go Komura (2026) studied this question.
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