# Troubleshooting
## Table of Contents
- [Linux](#linux)
- [Fonts showing up as rectangles](#linux-fonts-rectangle)
- [Global menu workaround for KDE](#linux-kde-global-menu)
- [macOS](#macos)
- [App can't be opened because Apple cannot check it for malicious software](#macos-unidentified-developer)
- ["VSCodium.app" is damaged and can’t be opened. You should move it to the Bin](#macos-quarantine)
## Linux
#### *Fonts showing up as rectangles*
The following command should help:
```
rm -rf ~/.cache/fontconfig
rm -rf ~/snap/codium/common/.cache
fc-cache -r
```
#### *Global menu workaround for KDE*
Install these packages on Fedora:
* libdbusmenu-devel
* dbus-glib-devel
* libdbusmenu
On Ubuntu this package is called `libdbusmenu-glib4`.
Credits: [Gerson](https://gitlab.com/paulcarroty/vscodium-deb-rpm-repo/-/issues/91)
## macOS
Since the App is signed with a self-signed certificate, on the first launch, you might see the following messages:
#### *App can't be opened because Apple cannot check it for malicious software*
You can right-click the App and choose `Open`.
#### *"VSCodium.app" is damaged and can’t be opened. You should move it to the Bin.*
The following command will remove the quarantine attribute.
```
xattr -r -d com.apple.quarantine /Applications/VSCodium.app
```