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Fix DLL errors by scenario
Not sure which category your error fits? Starting from the program you're using is often fastest. The six scenarios below cover the highest-frequency DLL-missing cases; each links to an official fix path.
PC games throwing DLL errors
Launching a game shows "d3dx9_43.dll / xinput1_3.dll / vcruntime not found"
Adobe apps (Photoshop / Premiere / Illustrator) failing to launch
Adobe apps complain about vcruntime140, msvcp140, ucrtbase or dxgi on startup
Python / Anaconda "DLL load failed"
After pip install, importing a package raises "DLL load failed while importing xxx"
Office / WPS office suites failing with DLL errors
Word / Excel / WPS crashes on launch or shows missing-DLL dialogs
WeChat / QQ / Chinese IM apps reporting DLL errors
WeChat / QQ / DingTalk / Lark fail to launch or crash after login
Antivirus deleted a needed DLL
One day a program suddenly fails to start โ turns out antivirus removed a DLL