Why Ubuntu Snap Apps Fail to Install
If you have opened a terminal on your Ubuntu Desktop in 2026, typed sudo snap install vlc or another app, and received a frustrating error, you are not alone. Snap package failures are one of the most common Ubuntu Desktop complaints on forums like Ask Ubuntu and Reddit, affecting users on Ubuntu 22.04, 23.10, and 24.04 alike.
The most frequent error messages include:
error: cannot perform the following tasks: - Download snaperror: snap has changes in progressdial unix /run/snapd.socket: connect: no such file or directoryerror: too early for operation, device not yet seededsnap-store: cannot refresh snap-store: snap has running apps
These errors all have different root causes including a crashed snapd daemon, a locked snap operation, corrupted cache, or a snap store that cannot update while it is open. In this guide, we walk through every major fix so you can get your Ubuntu apps installing again in minutes.
What Causes Snap Installation Errors on Ubuntu
Before jumping to fixes, understanding the cause saves you from repeating the same problem. Common culprits in 2026 include:
- snapd daemon not running - the background service that handles all snap operations has crashed or was never started.
- Change already in progress - a previous snap operation was interrupted, leaving a lock file behind.
- Snap Store is open - the Snap Store app blocks its own refresh because it is a running process; Ubuntu cannot update a running snap.
- Network or proxy issues - snap downloads from Canonical CDN and will fail behind restrictive firewalls or broken DNS.
- Corrupted snap cache - stale or partially downloaded snap files in /var/lib/snapd/cache/ confuse the installer.
- Low disk space - snaps require free space in /var and /snap; Ubuntu will not install if these partitions are nearly full.
Quick Fix: Restart the Snapd Service
The fastest first step is to restart the snapd daemon. This resolves the majority of snap installation failures caused by a crashed or unresponsive service:
sudo systemctl stop snapd
sudo systemctl start snapd
sudo systemctl status snapdIf the status output shows active (running) in green, try your snap install again. If snapd is masked or disabled, enable it first:
sudo systemctl unmask snapd
sudo systemctl enable --now snapdThen retry the installation:
sudo snap install app-nameFix the Change in Progress Error
If you see error: snap X has changes in progress, a previous snap task is stuck with a lock. Here is how to clear it:
Step 1: List all pending snap changes:
sudo snap changesNote the ID number of the stuck change shown in the first column with status Doing or Error.
Step 2: Abort the stuck change by replacing 42 with the actual ID:
sudo snap abort 42Step 3: Restart snapd and retry:
sudo systemctl restart snapd
sudo snap install app-nameIf snap abort itself hangs, force-kill snapd and let systemd restart it cleanly:
sudo killall snapd
sudo systemctl restart snapdFix the Snap Store Has Running Apps Refresh Error
The Snap Store cannot update itself while it is open. This is the most common complaint on Ubuntu 22.04 and 24.04 in 2026. The terminal solution:
sudo killall snap-store
sudo snap refresh snap-storeOnce the Snap Store refreshes, open it again normally. If you are getting the error on a different app, close that app first and then run:
sudo snap refresh app-nameYou can also hold automatic background refreshes temporarily while you manage your snaps:
sudo snap set system refresh.hold="2026-05-31T03:40:53+05:30"Clear the Snap Cache to Fix Download Errors
Corrupted partial downloads in the snap cache cause installation to silently fail or loop. Clear the cache with:
sudo rm -rf /var/lib/snapd/cache/*Then immediately retry the install:
sudo snap install app-nameCheck available disk space before retrying since snap packages need room to expand:
df -h /var /snapIf either partition is above 90% usage, free up space before proceeding.
Fix the dial unix /run/snapd.socket Error
This error means the snapd socket file is missing because snapd is not running at all. Run:
sudo systemctl restart snapd.socket snapdIf the socket still does not appear, check whether snapd is installed:
which snap
snap --versionIf snap is missing entirely, reinstall it:
sudo apt update
sudo apt install --reinstall snapd
sudo systemctl enable --now snapd snapd.socketThen create the required symlink if it is missing:
sudo ln -sf /var/lib/snapd/snap /snapFix Network and DNS Issues Blocking Snap Downloads
Snap packages are downloaded from api.snapcraft.io. If your machine sits behind a corporate proxy or has broken DNS, snaps will fail with connection errors. Test connectivity first:
curl -I https://api.snapcraft.ioIf this fails, check your DNS:
nslookup api.snapcraft.ioIf you are behind a proxy, set the proxy for snapd:
sudo snap set system proxy.http="http://your-proxy:port"
sudo snap set system proxy.https="http://your-proxy:port"Restart snapd after setting the proxy and retry the install.
How to Prevent Snap Installation Failures in 2026
Once your snaps are working, a few habits prevent these errors from recurring:
- Keep snapd updated - run sudo apt update and sudo apt upgrade weekly to get the latest snapd patches, including security fixes like CVE-2026-3888.
- Do not interrupt snap operations - never close the terminal or shut down mid-install; this creates orphan lock files.
- Close apps before refreshing - always close the Snap Store before updating it from the terminal.
- Monitor disk space - snaps accumulate old revisions; clean them with sudo snap remove --purge app when uninstalling.
- Clean old snap revisions - Ubuntu keeps two revisions of every snap by default; remove extras to free space.
sudo snap set system refresh.retain=2
snap list --all | awk "/disabled/{print $1, $3}" | while read snapname revision; do sudo snap remove "$snapname" --revision="$revision"; doneStill Stuck? Get Expert Help
If none of these fixes resolve your Ubuntu snap installation problem, the issue may be deeper including a corrupted snapd installation, conflicting AppArmor profiles, or a system-level configuration issue that needs an expert eye.
CloudHouse Technologies Pay-Per-Ticket Support gives you access to a Linux expert who can remotely diagnose and fix your Ubuntu snap and software issues with no monthly subscription and no wasted time on forums.
Frequently Asked Questions
Why does Ubuntu snap say change in progress even after a reboot?
A reboot usually clears in-progress snap changes, but if snapd starts and immediately picks up the same stuck task from its state file, the error persists. Run sudo snap changes, find the stuck task ID, and run sudo snap abort ID to clear it permanently.
Can I use apt instead of snap to install apps on Ubuntu?
Yes. Many apps available as snaps are also in Ubuntu APT repositories. Run sudo apt search app-name to check. APT packages integrate more natively with the system and do not have the snap daemon dependency, making them a reliable fallback.
How do I completely reinstall snapd on Ubuntu without losing my data?
Run sudo apt remove --purge snapd, reboot, then sudo apt install snapd and reboot again. Your snap app data in the ~/snap/ folder stays intact, but you will need to reinstall all snap packages. Back up ~/snap/ first if any apps store important data there.
Why do snap apps disappear from the app launcher after installing?
Snap apps install their .desktop launcher files under /var/lib/snapd/desktop/applications/. If /snap/bin is missing from your PATH or the desktop environment has not refreshed its app index, the launcher will not appear. Log out and back in, or run update-desktop-database to force a refresh.
Is it safe to disable snap entirely on Ubuntu 24.04?
Yes, but with caveats. Some Ubuntu components like the Firefox snap and the Snap Store itself rely on snapd. You can disable snapd with sudo systemctl disable --now snapd and install Firefox via the Mozilla APT repository instead. However, some Ubuntu system utilities may stop receiving snap-delivered updates, so review what snaps are installed before disabling.