How to Install OnlyOffice on Ubuntu 26.04 – Complete Guide

Configure the modern, open-source office productivity suite on your Ubuntu workstation. Fix sandbox font rendering, enable external storage, and establish stable printing services.

OnlyOffice Installation Methods Compared

Review the comparison below to decide between native DEB integration, containerized Flatpak, and official Snap packaging.

Use wget to retrieve the stable Debian installer from ONLYOFFICE’s official servers based on your system architecture:

For AMD64 (Standard 64-bit PCs):

wget https://download.onlyoffice.com/install/desktop/editors/linux/onlyoffice-desktopeditors_amd64.deb

For ARM64 (Raspberry Pi, ARM-based laptops):

wget https://download.onlyoffice.com/install/desktop/editors/linux/onlyoffice-desktopeditors_arm64.deb

Note: If you prefer to download using a web browser, visit the official OnlyOffice Linux Download Page and select the DEB option.

Deploy the downloaded installer using apt, which automatically resolves and retrieves required system dependencies:

For AMD64:

sudo apt update
sudo apt install ./onlyoffice-desktopeditors_amd64.deb -y

For ARM64:

sudo apt update
sudo apt install ./onlyoffice-desktopeditors_arm64.deb -y

If you want ONLYOFFICE to receive automatic software updates alongside other native package updates via APT, configure the official GPG key and repository source:

1. Import the official GPG keyring:

curl -fsSL https://download.onlyoffice.com/GPG-KEY-ONLYOFFICE | gpg --dearmor | sudo tee /usr/share/keyrings/onlyoffice.gpg > /dev/null

2. Add the official debian squeeze repository source:

echo "deb [signed-by=/usr/share/keyrings/onlyoffice.gpg] https://download.onlyoffice.com/repo/debian squeeze main" | sudo tee /etc/apt/sources.list.d/onlyoffice.list

3. Update local databases and install:

sudo apt update
sudo apt install onlyoffice-desktopeditors -y

If Flatpak is not already configured on your machine, install the Flatpak service and add the Flathub store remote configuration:

sudo apt update
sudo apt install flatpak -y
sudo flatpak remote-add --if-not-exists flathub https://dl.flathub.org/repo/flathub.flatpakrepo

Execute the install command to build the isolated OnlyOffice container:

flatpak install flathub org.onlyoffice.desktopeditors -y

Because Flatpak isolation blocks the software from viewing host filesystems, you must manually grant the container read-only access to host system and local user font paths to render characters and documents correctly:

flatpak override --user --filesystem=xdg-config/fontconfig:ro --filesystem=~/.local/share/fonts:ro --filesystem=/usr/share/fonts:ro org.onlyoffice.desktopeditors

Rebuild the internal Flatpak font cache to apply and verify the permission changes:

flatpak run --command=fc-cache org.onlyoffice.desktopeditors -fv

Run the snap installation command in your terminal to deploy ONLYOFFICE:

sudo snap install onlyoffice-desktopeditors

Because the Snap sandbox blocks OnlyOffice from reading documents located on external drives or USB sticks by default, you must manually connect the removable media plug:

sudo snap connect onlyoffice-desktopeditors:removable-media

If you have trouble printing files directly from OnlyOffice, connect the CUPS printing control interface to grant the Snap sandbox access to local printers:

sudo snap connect onlyoffice-desktopeditors:cups-control

Prerequisite: The target Nextcloud or ownCloud server must have the official ONLYOFFICE Integration App installed and configured by an administrator to allow connections.

If your installation process is interrupted or throws package dependency errors (such as unmet dependencies during DEB setup), run the standard APT recovery command to repair your local packages:

sudo apt --fix-broken install

This command instructs the package manager to scan your system configuration, fetch any missing prerequisite shared libraries, and complete the configuration of the OnlyOffice DEB package. After running the recovery command, you can launch the application safely from your desktop environment.

To remove the native installation, purge the packages and delete user profile configurations:

sudo apt purge onlyoffice-desktopeditors -y
sudo apt autoremove --purge -y

To delete all saved document presets and template configs, execute the clean command:

rm -rf ~/.config/onlyoffice/ ~/.local/share/onlyoffice/

To uninstall the Flatpak container, delete the package and clean local sandbox settings directories:

flatpak uninstall org.onlyoffice.desktopeditors -y

Wipe the container filesystem overlays folder completely:

rm -rf ~/.var/app/org.onlyoffice.desktopeditors

To remove the Snap package, run the purge command to delete the package and its sandboxed system data:

sudo snap remove onlyoffice-desktopeditors

Refer to the following resources for community support and official documentation: