# MainDab won't open

### What does it mean by MainDab not opening?

This means that MainDab will not open when you try run it, not when MainDab [cannot inject](../unable-to-inject-into-roblox/injection-crashes-roblox) or execute a certain script.

### Possible fixes

1. Ensure that your antivirus is not affecting MainDab or any of the APIs used. For instructions, see [disabling your antivirus](../../downloading-maindab/disabling-your-antivirus).
2. [Redownload MainDab](../../downloading-maindab/downloading-maindab-1).

If issues persist, see the [getting help page](../../getting-help).
