Failed to create the site. Arcgis Server 10.3.1

[SibghatUllah1]

After installing ,when trying to create a new site following error appears. I have also checked the log file. Any suggestions how to remove this error? 

My system specifications are Arcgis 10.3.1 Desktop & server ,Windows 10 

<Msg time="2016-10-26T17:18:32,113" type="INFO" code="9011" source="Rest" process="6524" thread="13"
 methodName="" machine="DEC-GIS" user="" elapsed="">Application initialized.</Msg> <Msg time="2016-10-26T17:18:33,184" type="INFO" code="7702" source="Server" process="7804" thread="1"
 methodName="" machine="DEC-GIS" user="" elapsed="">Web server started successfully.</Msg> <Msg time="2016-10-26T17:18:42,657" type="INFO" code="7252" source="Admin" process="6524" thread="13" 
methodName="" machine="DEC-GIS" user="" elapsed="">Creating a new site.</Msg> <Msg time="2016-10-26T17:18:42,658" type="INFO" code="7064" source="Admin" process="6524" thread="13"
 methodName="" machine="DEC-GIS" user="" elapsed="">Checking and validating server licenses.</Msg>

[JayantaPoddar]

Make sure the ArcGIS Server account has Read/write Access for C:\arcgisserver folder (with its sub-folders). Restart ArcGIS server service from services.msc. Retry creating the site.

[SibghatUllah1]

Dear Jayanta,

I have already checked that both accounts have full access control to  C:\arcgisserver folder. i have also changed the directory but no success.

[SibghatUllah1]

Issue was Windows firewall , update the licence file again. restart arcgis server service.It is running now.

[DanFranklin]

when you say you updated the license file, what do you mean? and was your Windows Firewall blocking ports internally on the machine?