How to Solve Error: After Reboot, SharePoint sites says “Service Unavailable”


I had to reboot my Dev Machine on which I have my SQL Server 2012 Business Intelligence Setup. After reboot, It turns out that when I wanted to open the SharePoint Site (for Power View related work) – it gives me error:

“Service Unavailable

HTTP Error 503. The Service is unavailable”

Now, I did quick searches found this and this

Turns out, for my scenario – the default application pool had stopped:

default application pool stopped

So this is what I did to solve the error:

1) Verified that the account and password for the App Pool is correct

2) Started it.

This is how you do it:

Start > IIS Manager > Application pools > Locate Default Application Pool that stopped > Verify that Account and Password are correct. > Start it.

After doing that, the SharePoint site started working again!

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