![]() ![]() ![]() If the value is set to 0, the protocol version will be used by default. This setting only applies when the application doesn't explicitly request the protocol versions to be used. The DisabledByDefault registry value defines whether the protocol version is used by default. If the value is not defined, it will use a default value determined by the operating system. ![]() If the value is set to 1, the protocol version can be used if enabled by default or if the application explicitly requests that protocol version. If the value is set to 0, the protocol version cannot be used, even if it is enabled by default or if the application explicitly requests that protocol version. The Enabled registry value defines whether the protocol version can be used. Customers should test such a change before performing it in production. However, this may cause compatibility issues with software that doesn't support the newest TLS protocol version. > Customers may also choose to disable TLS 1.0 and TLS 1.1 to ensure that only the newest protocol version is used. Microsoft recommends disabling SSL 2.0 and SSL 3.0 due to serious security vulnerabilities in those protocol versions. You don't need to enable or disable one protocol version to enable or disable another protocol version. Each SSL and TLS protocol version can be enabled or disabled independently. SSL and TLS support are enabled or disabled in Windows Schannel by editing the Windows Registry. NET Framework 4.5 or higher, add the following registry keys:ĭisable earlier versions of SSL and TLS in Windows Schannel Using TLS 1.1 and TLS 1.2 onwards with Office Online Server requires strong cryptography in. Anyone who applies this patch can skip this step. As of the July 2021 cumulative security update ( ), this step is not required. ![]()
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