How to Tell If a Browser Extension Is Causing Problems
Diagnose browser extensions that slow pages, break websites, change behavior, or conflict with Chrome, Edge, and Firefox.
Extensions
Extensions that stop working, conflict, or make the browser unstable.
Start with the closest symptom
These guides are grouped here because the first checks overlap. Open the guide that best matches what you see now, then use its verification section before moving to a broader fix.
Related tools
- PC Troubleshooting Wizard, Answer a few questions about what is going wrong. The wizard points you to the safest matching guide on this site.
- Internet Connection Troubleshooter, Answer practical questions about Wi-Fi, Ethernet, and websites. Get a likely cause and the matching Practical PC guides.
- DNS Lookup, Look up public A, AAAA, CNAME, MX, NS, and TXT records for a domain and read what each record type means.