> For the complete documentation index, see [llms.txt](https://docs.keyfax.biz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.keyfax.biz/product-suite/admin/known-issues/stopped-working.md).

# Stopped Working

On launching Admin Tools, should you ever see the message 'Keyfax Inter•View has stopped working', e.g.

<figure><img src="/files/aTqLP63PzhyPBT0cmYQc" alt=""><figcaption></figcaption></figure>

It's possible that the `Preferences.dat` file has become corrupt in which case, delete the file at `%appdata%\Keyfax Administration{X.X.X}\Preferences.dat`. Where `X.X.X` represents the version of Keyfax Administrator Tools you have installed.