401 Unauthorized for imunify360-alt-php: Cannot download repomd.xml during dnf update

Issue

Server updates fail when dnf update tries to download metadata for the imunify360-alt-php repository.

The error may look as follows:

Errors during downloading metadata for repository 'imunify360-alt-php':
- Status code: 401 for https://repo.alt.cloudlinux.com/el/.../alt-php/$releasever/updates/$basearch/repodata/repomd.xml

Error: Failed to download metadata for repo 'imunify360-alt-php': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried

or:

cannot update repo 'imunify360-alt-php': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried; Last error: Status code: 401

The issue can occur even when the Imunify360 license status is valid:

imunify360-agent rstatus
OK

Environment

• Imunify360
• HardenedPHP
• imunify360-alt-php repository 
• EL9/EL10-based systems, including AlmaLinux 9/10 or CloudLinux 10 
• dnf / yum package updates

Solution

Re-register the Imunify360 license and refresh the package metadata.

1. Unregister the current Imunify360 license:

imunify360-agent unregister

2. Register the server again with the valid activation key:

imunify360-agent register YOUR_KEY

3. Clean the package manager cache:

yum clean all

4. Retry the update or repository access:

yum update

For systems using dnf, run:

dnf update

Alternative temporary workaround

Use this workaround only if HardenedPHP is not installed or is not currently required. If HardenedPHP is actively used, disabling this repository may prevent HardenedPHP packages from receiving updates while the repository remains disabled.

1. Edit the repository file:

/etc/yum.repos.d/imunify360-alt-php.repo

2. Change:

enabled=1

to:

enabled=0

3. Clean the metadata cache and retry the update:

dnf clean all
dnf makecache
dnf update

4. Re-enable the repository after the issue is resolved:

enabled=1

Useful links

https://cloudlinux.zendesk.com/hc/en-us/articles/5467109347612-Plesk-update-fails-Errors-during-downloading-metadata-for-repository-imunify360-alt-php