@KEHINDE OLAGUNJU ,
After installing the fixes, remember to run the SharePoint 2013 Products Configuration Wizard on each SharePoint server in the farm.
In addition, SharePoint updates cannot be uninstalled, so if something goes wrong there is no easy way to roll it back.
What do you mean the whole site is not coming up? Please feel free to reply.
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Yes! It is working perfectly now. We had to run Configuration Wizard on each SharePoint server more than two times before the issue was fixed. We ran Configuration Wizard on the Central Admin SharePoint server more than five times. Thank you.
@KEHINDE OLAGUNJU ,
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Thank you for your understanding.