The Unattended Service Account Application ID is not specified or has an invalid value.

Steps Taken:

1. Open Health Analyzer and view details
2. Manage the Visio Graphics Service (SA) and confirm Application ID is empty.
3. Manage the Secure Store Service (SA) and Generate New Key
4. Create a New Target Application
5. Provide a unique ID, name, and contact email. Select Group Type.
6. Accept default and just click Next
7. Provide a user name for both fields.  I used “DEMOAdmin” as that is the only user on this machine. Click OK.
8. Enter the Target Application ID back on the Visio Graphics Service (SA) page and click OK.
9. Go to the Health Analyzer rule, open it and click Reanalyze Now, then you should be ready to go.  

Reference 1
Reference 2

The Security Token Service is unavailable

Run the following commands one by one on SharePoint PowerShell:

$h = Get-SPServiceHostconfig

$h.Provision()

$services = Get-SPServiceApplication

foreach ($service in $services) { $service.provision();
write-host $service.name}

Reference

Sharepoint建立站台時找不到預設Feature.

出現下列錯誤

The site template requires that the Feature {e995e28b-9ba8-4668-9933-cf5c146d7a9f} be activated in the site collection.