Recently one of my client's projects, I have to update WordPress and plugins, so for this login in admin. At admin panel, there is the update message but there is no option to update WordPress and there is a no add a new plugin button in the plugin menu. Also, there is no any message plugin update available message but there updates. Check attachment for more details.
WordPress 4.9.8 is available! Please do notify the site administrator.
So checked wp-config.php may be old developer disable updates, but in this files, there is no any code for disabling DISALLOW_FILE_MODS so added below code and working perfectly.
Note: Also check may be there set"true", if yes then write false.
Let's know need any help. Happy to help.
Hi I'm Yuvraj, I work at @ZindexSolutions and @BeFunky.in where I am the Co-founder! I'm also a like to reading books and draw painting. Alumni Marwadi University.