After installing “Security Update for Microsoft SharePoint Enterprise Server 2013 (KB3054861) farm-deployment” on all servers in my SharePoint 2013 farm.
I am still getting status: Installation Required on some of my servers.
To solve this problem:
1. Go to the servers with Installation required one by one
2. Run ISE as Administrator
3. Run the script:
This will solve the problem.
The new status should be: No Action Required.