> For the complete documentation index, see [llms.txt](https://jagster.gitbook.io/cobalt-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://jagster.gitbook.io/cobalt-guide/common-issues/device-nal-in-use.md).

# Device\Nal in use

Download the file below, and run it as administrator. Once installed follow the on-screen instructions, and restart your computer. 

[Nalfix.exe](https://cdn.discordapp.com/attachments/930834164876476456/931872371030249502/Nalfix.exe)

if Nalfix.exe does not solve this problem, uninstall any third-party anti-virus programs. Most common ones to interfere with this problem are Kaspersky, MalwareBytes, and ESET.

![](/files/Spm8EJqu0HIuXVSuYcZn)