After installing Parallels Tools in an Ubuntu Linux 25.04 virtual machine, you may experience issues with shared folders appearing empty after prompting for a password.
In some cases, external drives may also fail to mount or appear within the guest operating system.
These issues are caused by AppArmor security restrictions impacting FUSE-based mounts, which are used by Parallels for shared folder and external drive integration.
Note: Please ensure to make a back up of the virtual machine before making any of the below changes.
While the Parallels Desktop development team is actively working on a permanent solution, the following workaround(s) may be used to restore these functionalities:
Option 1: Editing the AppArmor profile
- Open Terminal on your Linux virtual machine and run the below command:
- sudo nano /etc/apparmor.d/local/fusermount3
2. Add the following lines and save the configuration:
mount fstype=@{fuse_types} options=(nosuid,nodev,rw,noatime) -> /media/**,
mount fstype=@{fuse_types} options=(nosuid,nodev,ro,noatime) -> /media/**,
3. A restart of the Ubuntu virtual machine for the change: From the Mac Menu Bar, Click on Actions > Restart
Option 2: Alternatively, you may disable AppArmor entirely :
You may do so by running the below command on the Linux Terminal:
- Install AppArmor utilities if not present:
sudo apt update sudo apt install -y apparmor-utils
2. Set fusermount3 profile to complain mode :
sudo aa-complain fusermount3
3. Optional: verify the profile is now in complain mode:
sudo aa-status | grep fusermount3
The workaround provided above should help restore access to shared folders and external drives in your Ubuntu Linux 25.04 virtual machine.
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