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Disable TLS 1.0 and TLS 1.1 on a Windows server
You can disable TLS 1.0 and TLS 1.1 on a Windows server using the following steps:
1. Open up Registry Editor by clicking on the Start Button, type in regedit and then hit Enter.
Since we are dealing with registry, we strongly suggest backing up the current Registry state. Misuse of the Registry might have detrimental effects on your system.(In the regedit screen highlight computer >>File >>Export >> Save file to a location you want)
2. In Registry Editor, locate the following registry key:
HKey_Local_Machine\System\CurrentControlSet\Control\SecurityProviders \SCHANNEL\Protocols\TLS 1.0\Server ( or TLS 1.1)
3. On the Edit menu, click Add Value.
4. In the Data Type list, click DWORD.
5. In the Value Name box, type Enabled, and then click OK.
Note If this value is present, double-click the value to edit its current value.
6. Type 00000000 in Binary Editor to set the value of the new key equal to "0".
7. Click OK. Restart the Server.