How to disable in OS and IIS from TLS and SSL 1.0? - Microsoft Q&A (2024)

FAQs

How to disable in OS and IIS from TLS and SSL 1.0? - Microsoft Q&A? ›

Open registry on your server by running regedit in the run window. Navigate to the below location: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols . Now change DWORD values under Server and Client under TLS 1.0: DisabledByDefault [Value = 0] and Enabled [Value = 0] .

Create a key named "TLS 1.1" with two DWORDs for both TLS 1.0 & 1.1: "DisabledByDefault=1" & "Enabled=0". Similarly, create a key named "TLS 1.0" with two DWORDs for each protocol, "DisabledByDefault=1" & "Enabled=0".

Create registry key to disable TLS 1.0

Right-click on the "Protocols" folder and select "New" -> "Key". Create a new DWORD registry entry named "DisabledByDefault" and set its value to "1". Create a new DWORD registry entry named "Enabled" and set its value to "0".

Due to the potential for future protocol downgrade attacks and other TLS 1.0 vulnerabilities not specific to Microsoft's implementation, it is recommended that dependencies on all security protocols older than TLS 1.2 be removed where possible (TLS 1.1/1.0/ SSLv3/SSLv2).

How do I know if TLS 1.0 or 1.1 is enabled? ›

These disable SSL 3.0, TLS 1.0, and RC4 protocols. Because this situation applies to SChannel, it affects all the SSL/TLS connections to and from the server. You must restart the computer after you change these values.

Disabling TLS 1.0 and TLS 1.1 on your server will protect your server and your clients from these vulnerabilities. However, if you have clients that support TLS 1.0 and/or TLS 1.1, but not TLS 1.2, then these clients will not be able to connect to your server if you disable TLS 1.0 and TLS 1.1.

Go to SSL/TLS > Edge Certificates. For Disable Universal SSL, select Disable Universal SSL. Read the warnings in the Acknowledgement. Select I Understand and select Confirm.

In the Internet Options window on the Advanced tab, under Settings, scroll down to the Security section. In the Security section, locate the Use SSL and Use TLS options and uncheck Use SSL 3.0 and Use SSL 2.0. If they are not already selected, check Use TLS 1.0, Use TLS 1.1, and Use TLS 1.2.

However, SSL is an older technology that contains some security flaws. Transport Layer Security (TLS) is the upgraded version of SSL that fixes existing SSL vulnerabilities. TLS authenticates more efficiently and continues to support encrypted communication channels.

In the Internet Options window on the Advanced tab, under Settings, scroll down to the Security section. In the Security section, locate the Use SSL and Use TLS options and uncheck Use SSL 3.0 and Use SSL 2.0. If they are not already selected, check Use TLS 1.0, Use TLS 1.1, and Use TLS 1.2.

There are a few reasons why you should disable TLS 1.0 and TLS 1.1 on Windows Server: TLS 1.0 and TLS 1.1 are no longer considered secure, due to the fact that they are vulnerable to various attacks, such as the POODLE attack.