Windows 7 and Exchange 2016 Disconnected
If you’re getting an Outlook Disconnected message on your Outlook recently, it may be due to the fact that your Windows 7 does not have the TLS 1.1 and TLS 1.2 support on the operating system. This is an easy fix for the Windows 7 and Exchange disconnected error.
Users of Windows 10 will not be affected from this.
Simply download the easy fix software from Microsoft’s website:
A brief explanation of what the fix does is shown below:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\WinHttp
On x64-based computers, DefaultSecureProtocols must also be added to the Wow6432Node path:HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Internet Settings\WinHttp
The registry value is a DWORD bitmap. The value to use is determined by adding the values corresponding to the protocols desired.
| DefaultSecureProtocols Value | Protocol enabled |
|---|---|
| 0x00000008 | Enable SSL 2.0 by default |
| 0x00000020 | Enable SSL 3.0 by default |
| 0x00000080 | Enable TLS 1.0 by default |
| 0x00000200 | Enable TLS 1.1 by default |
| 0x00000800 | Enable TLS 1.2 by default |
After the fix has been applied, you will now need to reboot. After the reboot the Outlook will renegotiate and connect again to the server. This is a security flaw based in Windows 7 and not related to our hosting services.