Today, my Visual Studio 2026 Insider completely stopped launching. I repeatedly told it not to display error messages. After that, the splash screen would only appear upon startup, then immediately disappear. I ran the entire recovery mode, but that didn't help. Then I went into the Cache directory and renamed it. That didn't help either. Then I renamed both 18.0_[letters-numbers] directories (to hide them and then, if necessary, bring them back) and launched Visual Studio – everything started normally.