The culprit is often a cluttered or "broken" cache. Since these temporary files can interfere with how the software loads, cleaning them out usually fixes the issue.
If you are using the web-based version, try these three troubleshooting methods:
- Clear out your stored cache and cookies
- Use an Incognito or Private window
- Try logging in through a different web browser (for example, moving from Chrome to Firefox or Edge)
If you need extra time, filing an extension by April 15, 2026, moves your submission deadline to October 15. But remember any taxes owed are still due in full by the original April 15 date.
