You may receive any of the following error messages: Error message 1 Error message 2 Error message 3 Error message 4 Regardless of the error message you receive, each points to the same issue.

Cause for this error

The Secure Channel (Schannel) components in Windows that support TLS 1.1 and 1.2 could have been disabled. In Windows 7 these protocol versions are not enabled by default. To resolve this issue, you must configure the related registry settings to make sure that Microsoft Office applications can successfully use TLS 1.1 and 1.2.

How to fix this Office 365 error

Before you begin, back up the registry or create a system restore point. Next, run the Easy Fix 51044 tool provided by Microsoft. The tool adds support for the DefaultSecureProtocols registry entry. This enables the system administrator to specify which SSL protocols should be used when the WINHTTP_OPTION_SECURE_PROTOCOLS flag is used. This fix can also enable certain applications that were built to use the ‘’WinHTTP’’ default flag to use the newer TLS 1.2 or TLS 1.1 protocols natively without having to use application updates. The Easy fix also adds the secure protocols at the following registry location to help enable TLS 1.1 and 1.2 for Internet Explorer.

For TLS 1.1 the Registry location is: 

DWORD name: DisabledByDefaultDWORD value: 0

For TLS 1.2 the Registry location is: 

DWORD name: DisabledByDefaultDWORD value: 0 That’s it!

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