The following error is displayed on the Home page in Plesk:
PLESK_ERROR: Failed to update the ModSecurity rule set. Details
The following error is shown if clicking on the Details link:
PLESK_ERROR: Failed to update the ModSecurity rule set: modsecurity_ctl failed: Failed to download the Comodo rule set. The issue is on the waf.comodo.com side and we will alert them. You can also report the issue yourself on the Comodo forum - https://forums.comodo.com/free-modsecurity-rules-comodo-web-application-firewall-b223.0/ It might help fixing the issue earlier. For now, select the Atomic Standard rule set and try switching back to Comodo tomorrow.
The resource from which Comodo ruleset is updated - https://waf.comodo.com/ - is not accessible.
The issue is on Comodo side and has already been reported to Comodo Support Team.
As a workaround temporarily switch to any other available ruleset:
- Log into Plesk.
- Go to Tools & Settings > Web Application Firewall (ModSecurity) > Settings tab.
- Select any other ruleset except Comodo and apply changes.
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