Could not start the SharePoint Server Search 16 service

Environment: SharePoint 2016 Enterprise Farm

Issue: Could not start the SharePoint Server Search 16 service in new SharePoint 2016 farm environment. The logon credentials was a search service account (spsearchserv)

Error: Windows could not start the SharePoint Server Search 16 service on Local Computer. Error 5: Access is denied.

Resolution: The issue is because the service was not having enough permission to the local computer. Adding the service account (spsearchserv) to the local Administrators group resolved the issue.

Manage Web Application grayed out

Environment: SharePoint Server 2016

Issue: After creating a farm, when opened the Central Administration to create a  new Web Application, the page is blank and the menu options are grayed out

Resolution: To resolve this problem, enable the JavaScript feature in Internet Explorer. To do this, follow these steps:

1. Open Internet Explorer, go to the SharePoint Server 2013 site, press Alt to reveal the Menu bar, click Tools, and then click Internet Options.
2. On the Security tab, click Custom level.
3. Scroll down to the Active scripting section, and then select Enable. 

Reference: https://support.microsoft.com/gl-es/help/2752584/please-enable-scripts-and-reload-this-page-error-message-when-you-try