Repair Difficulty : Medium
For Microsoft Windows 7 and later
1) Open Control Panel Window (Click Start and press “Control Panel” Button on Right Side)
2) Open Windows Firewall from Control Panel Window.
3) Tap On “Turn Windows Firewall on or off”
Note: If you are logged in as Guest user you will be asked to enter Admin Password
4) Click on “Turn off Windows Firewall (not recommended)” under each of the active network connections.
Warning: Please Activate Microsoft Windows Firewall after Office 365 repair is complete.
In most case 0-1011900 error code in Office 365 should be resolved by now, if however the problem still persists please get your system checked by an expert.
If you are not able to resolve the issue following above steps, you can contact our 24×7 Chat Support for help.
Posted In: Office 365