- Plesk 12.5 for Linux
Clicking on Check Security in WordPress displays that all the WordPress instances are not secured (marked with a red exclamation sign)
Opening any of a "not secured" installations shows that actually security is OK. After that WordPress instance is marked as secured (green checkmark)
After another security check, the instance is marked as not secured again.
- #PPPM-4247 "Support issue PPPM-4247"
- Plesk Onyx 17.0 Release 15 November 2016 (Windows)
If update is not possible for some reason you may try the following
Too many WordPress files: the number of files in WordPress directory is more than the maximum allowed number of open file descriptors.
Consider to upgrade Plesk to Plesk Onyx.