Here are a few options for a post about disabling or troubleshooting osa.dll , tailored to different platforms.

Quick fix:

Is your computer lagging on startup? 🐢

To determine if a conflict is caused by an add-in, try running Office in Safe Mode. Press Windows Key + R .

Forensic papers discuss finding osa.dll disabled as an (IOC).

Microsoft’s own knowledge base (KB articles) described disabling osa.dll to fix slow Office startup or conflicts with add-ins.