Imunify360 Install, Licence and Uninstall Commands (Tested on cPanel)

Short answer: for an Imunify360 install, download the installer with wget https://repo.imunify360.cloudlinux.com/defence360/i360deploy.sh, check the server with bash i360deploy.sh --check, then install with bash i360deploy.sh --key YOUR_KEY. If the licence is tied to the server’s IP address (an IPL licence, for example one that came with the server), install with bash i360deploy.sh and run imunify360-agent register IPL. To remove Imunify360 and keep the free ImunifyAV scanner, run bash i360deploy.sh --uninstall --downgrade. Without --downgrade it removes everything.

Applies to i360deploy.sh 2.155; Imunify360 8.14.1 (installed without licence); ImunifyAV 8.9.2; cPanel & WHM 138.0 build 15; AlmaLinux 9.8; lab test 11 Oct 2026

What we tested: on 11 October 2026 we installed Imunify360 8.14.1 with i360deploy.sh 2.155 on our cPanel lab (cPanel & WHM 138.0 build 15, AlmaLinux 9.8), without a licence. We ran the licence commands, so the licence errors below are real output. We then removed it with --uninstall --downgrade and checked what was left. Not tested, because we have no paid licence: registering a real key, update-license on a licensed server, and a plain --uninstall or --purge of Imunify360. Those come from the installer’s own help and the Imunify documentation.

i360deploy.sh options

The installer prints its options with bash i360deploy.sh -h. These are the ones from version 2.155:

Option	What it does
--check	Checks whether Imunify360 can be installed on this server, installs nothing
-k, --key KEY	Installs and registers with an activation key
(no option)	Installs without registering; this is the default, so you can register later
-c, --uninstall	Uninstalls Imunify360
--downgrade	With --uninstall: keeps ImunifyAV installed
--purge	With --uninstall: also removes configuration and state files
--beta	Installs from the testing repository
--post-os-upgrade	Run after a Debian/Ubuntu dist-upgrade
-y, --yes	No prompts; needed for unattended installs
--version	Prints the installer version

Imunify360 install with i360deploy.sh

The same installer works on cPanel, DirectAdmin and Plesk, and on servers without a panel. Run it as root:

wget https://repo.imunify360.cloudlinux.com/defence360/i360deploy.sh -O i360deploy.sh
bash i360deploy.sh --check                 # "Compatibility check passed. System is compatible with Imunify360."
bash i360deploy.sh --key YOUR_KEY          # key from CloudLinux Network (cln.cloudlinux.com)
# or, for an IP-based licence:
bash i360deploy.sh && imunify360-agent register IPL

On our lab the install downloaded about 90 MB and took 2 minutes 20 seconds. It ended with Imunify360 is started and Success, and the full log is in /var/log/i360deploy.log. Two things looked alarming but were not:

• The log showed Error in POSTIN scriptlet in rpm package imunify360-ossec. The install still finished, and the OSSEC service was running afterwards.
• On a cPanel server that already has ImunifyAV, the imunify-antivirus package stays installed. The imunify360-firewall package depends on it, because it is the malware scanner inside Imunify360. What changes is the WHM plugin: the ImunifyAV page is replaced by the Imunify360 one. Without -y, the installer asks before it replaces ImunifyAV.

On DirectAdmin, see Install Imunify360 on DirectAdmin for the panel-specific settings.

Licence: key or IP-based (IPL)

Licence type	Where it comes from	Command
Activation key	Bought or trialled in CloudLinux Network (CLN); the key is also in the purchase email	imunify360-agent register YOUR_KEY
IP-based (IPL)	Licence bound to the server’s IP address	imunify360-agent register IPL (the literal word IPL, not the IP)

The free trial is 14 days, with unlimited users, and starts from the Imunify360 or CLN website. Paid licences are sold by the maximum number of hosting accounts on the server: 1, 30, 250 or unlimited. Useful licence commands:

imunify360-agent rstatus              # OK when the licence is valid
imunify360-agent rstatus --json -v    # details
imunify360-agent update-license       # refresh, e.g. after the account count changes
imunify360-agent unregister           # release the licence before moving it to another server
imunify360-agent register NEW_KEY     # apply a different key (unregister first)

These are the messages we got on our unlicensed lab, so you can recognise them:

# imunify360-agent rstatus
WARNING: License is invalid for current server

# imunify360-agent register IPL
WARNING: {"success":false,"message":"IP license not found for 64.235.58.77","data":null,"type":"no_ip"}

IP license not found for <IP> means no IP licence exists for the address the licence server sees. Check that the IP in the message is the one the licence was bought for. Behind NAT, or on a server whose outgoing traffic leaves from another address, they can differ. If you have an activation key instead, use register YOUR_KEY.

Check the version, update and force update

imunify360-agent version                 # e.g. 8.14.1
rpm -q imunify360-firewall               # dpkg -l imunify360-firewall on Ubuntu
yum update imunify360-firewall           # normal update (staged roll-out)
apt-get update && apt-get install --only-upgrade imunify360-firewall   # Ubuntu

Imunify releases updates in stages. To install the newest version before the roll-out reaches you, and to roll back, see Imunify360 force update and rollback. The same imunify-force-update.sh script serves ImunifyAV; we tested it on ImunifyAV in our ImunifyAV uninstall and update guide.

Uninstall Imunify360

Goal	Command
Remove Imunify360, keep the free ImunifyAV scanner	bash i360deploy.sh --uninstall --downgrade
Remove Imunify360 completely	bash i360deploy.sh --uninstall
Remove it and its configuration and state files	bash i360deploy.sh --uninstall --purge

If you plan to use the licence on another server, run imunify360-agent unregister first.

We tested --uninstall --downgrade -y. It took 55 seconds, and ImunifyAV was working afterwards: rstatus printed OK, a test scan of 3,812 files ran, and the WHM page was back. The package list matched our original ImunifyAV install. The script still ended with exit code 1 and this message:

WARNING: Package imunify-realtime-av-imrt2 is missing.
ERROR: Some ImunifyAV packages are missing. Manual intervention may be required.

On our server this was a false alarm: that package was never part of the free ImunifyAV install. Check ImunifyAV yourself with imunify-antivirus rstatus and a quick scan, and only intervene if those fail. If ImunifyAV really is broken, reinstall it with bash imav-deploy.sh.

What the uninstall leaves behind

This is what we found after --uninstall --downgrade without --purge:

Leftover	Size or detail	Safe to remove?
/var/ossec	1.7 MB	Yes, once Imunify360 is gone
/etc/imunify360-webshield	544 KB	Yes
/usr/share/imunify360-webshield	20 KB	Yes
Empty imunify360_ossec chain in iptables and ip6tables	No rules, nothing points to it	Yes, with iptables -X once you have confirmed it is empty
Users imunify360-webshield, ossec, ossecr, ossecm, ossece	No processes left	Yes
/etc/sysconfig/imunify360, /var/imunify360	172 KB, 192 MB	No, ImunifyAV uses them

This is how we cleaned up. Each step checks before it deletes:

for t in iptables ip6tables; do
  [ "$($t -S imunify360_ossec 2>/dev/null | grep -vc '^-N')" = 0 ] && \
  [ "$($t -S | grep -c -- '-j imunify360_ossec')" = 0 ] && $t -X imunify360_ossec
done
rm -rf /var/ossec /etc/imunify360-webshield /usr/share/imunify360-webshield
for u in imunify360-webshield ossec ossecr ossecm ossece; do ps -u $u >/dev/null || userdel $u; done
systemctl daemon-reload && systemctl reset-failed

Stop cPanel from installing Imunify360

cPanel has a background task that installs Imunify360 and keeps retrying if the install fails. We read it on our cPanel 138 server, in Cpanel/TaskProcessors/ImunifyTasks.pm. The task skips the install, and stops retrying, when this file exists:

touch /var/cpanel/noimunify360

The ImunifyAV equivalent is /var/cpanel/noimunifyav.

Logs

File	What it holds
/var/log/i360deploy.log	Install and uninstall runs of i360deploy.sh
/var/log/imunify360/console.log	Main agent log
/var/log/imunify360/error.log	Agent errors
/var/ossec/logs/	OSSEC (intrusion detection) logs while Imunify360 is installed

Common problems

• “License is invalid for current server”. The server has no valid registration. Run imunify360-agent register YOUR_KEY or register IPL.
• “IP license not found for x.x.x.x” (type no_ip). No IP licence exists for that address. Compare it with the IP on your licence, or use a key.
• Error in POSTIN scriptlet for imunify360-ossec during install. On our lab the install still succeeded and OSSEC ran. Check the end of /var/log/i360deploy.log for Success.
• “Some ImunifyAV packages are missing” after --downgrade. Check that ImunifyAV works (imunify-antivirus rstatus, then a scan) before doing anything; on our lab it was a false alarm.
• imunify360-agent works, but Imunify360 is not installed. On ImunifyAV servers imunify360-agent is a link to imunify-antivirus. Check with rpm -q imunify360-firewall.
• Imunify360 is missing from WHM after the install. See Imunify360 missing from WHM.
• After an OS upgrade. See Imunify360 after an OS upgrade; on Debian and Ubuntu, --post-os-upgrade exists for this.

Vendor reference: the Imunify360 documentation.

Frequently asked questions

Reading a lot of our guides? Go ad-free with srvScripts Pro for $6 a month. It also pays for new guides. Cancel any time.

Maintenance record

This guide changes servers, data or security settings, so we re-check it against current versions on a fixed schedule. Take a backup or snapshot before you start.

Maintained by

srvScripts editorial team

Supported versions

i360deploy.sh 2.155; Imunify360 8.14.1 (installed without licence); ImunifyAV 8.9.2; cPanel & WHM 138.0 build 15; AlmaLinux 9.8; lab test 11 Oct 2026

Last full review

11 Oct 2026

Next review

11 Apr 2027

Sources

docs.imunify360.com/command_line_interface
blog.imunify360.com/getting-started-licensing
support.cpanel.net/hc/en-us/articles/1500003450921
imunify360.com/getting-started-installation