How do you control ciphers for SSL and TLS on IIS?

You can use the SSL Cipher Suite Order Group Policy settings to configure the default TLS cipher suite order.

  1. From the Group Policy Management Console, go to Computer Configuration > Administrative Templates > Network > SSL Configuration Settings.
  2. Double-click SSL Cipher Suite Order, and then click the Enabled option.

How do I disable weak SSL protocols and ciphers in IIS?

go to HKLM\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\SSL 3.0\Server ; create the key if it does not exist. make sure that DWORD value Enabled exists and is set it to 0. make sure that DWORD value DisabledByDefault (if exists) is set it to 1.

How do I fix unsupported protocol or cipher suite?

The client and server don’t support a common SSL protocol version or cipher suite….How to Fix the ERR_SSL_VERSION_OR_CIPHER_MISMATCH Error

  1. Check the SSL/TLS Certificate.
  2. Configure SSL with Cloudflare.
  3. Enable TLS 1.3 Support.
  4. Disable the QUIC Protocol.
  5. Clear Your Web History/Cache.
  6. Disable Your Antivirus or Firewall.

How do I find my IIS cipher settings?

View and Edit Enabled Ciphers On the left pane, click Computer Configuration >> Administrative Templates >> Network >> SSL Configuration Settings.

How do I check my TLS 1.2 cipher suite?

How to find the Cipher in Chrome

  1. Launch Chrome.
  2. Enter the URL you wish to check in the browser.
  3. Click on the ellipsis located on the top-right in the browser.
  4. Select More tools > Developer tools > Security.
  5. Look for the line “Connection…”. This will describe the version of TLS or SSL used.

How do I get rid of weak cipher suite?

Configure best practice cipher and removing weak ciphers easily – Version 18.2 and above

  1. In a text editor, open the following file: [app-path]/server/server.properties.
  2. Locate the line starting with “server.ssl.using-strong-defaults”
  3. Remove the proceeding # sign to uncomment the lines and edit the list as needed.

How do I fix weak SSL ciphers?

Configure the SSL cipher order preference- Version 17.1 and above

  1. In a text editor, open the following file: [app-path]/server/server.properties.
  2. Locate the line starting with “server.ssl.follow-client-cipher-order”
  3. Remove the proceeding # sign to uncomment the lines and edit the list as needed.
  4. Change client to server.

How do I disable cipher suites in IIS?

Open the Registry Editor (Start > Run > regedit)….Procedure

  1. Create a new key called RC4 128/128 (Ciphers > New > KeyRC4 128/128).
  2. Right-click the key’s name and create a new DWORD (32-bit) Value called ‘Enabled’. (New > DWORD (32-bit) Value > Enabled).
  3. Leave the default value as ‘0’.

How can I remove Err_ssl_protocol_error steps?

How to Fix “ERR_SSL_PROTOCOL_ERROR” for Google Chrome

  1. Check the Date of Your System.
  2. Clear Browsing Data.
  3. Clear Your SSL State.
  4. Disable QUIC Protocol of Chrome.
  5. Check Your Antivirus Settings.
  6. Check Your Firewall.
  7. Disable Extensions.
  8. Adjust Your Internet Security and Privacy Level.

How do I fix error the client and server do not support a common SSL protocol version or cipher suite?

Simple Fixes

  1. Check your internet connection.
  2. Check the SSL certificate.
  3. Delete Browser Cache and Cookies.
  4. Clear the SSL State.
  5. Check RC4 Cipher Suite.
  6. Check for Certificate Name Mismatch.
  7. Remove Unnecessary Add-ons and Extensions.
  8. Whitelist Website in Firewall and Antivirus Software.

How do I check my SSL certificate cipher suite?

How do I enable TLS 1.2 cipher suites?

Run a script to enable TLS 1.2 strong cipher suites

  1. Log in to the manager.
  2. Click Administration at the top.
  3. On the left, click Scheduled Tasks.
  4. In the main pane, click New.
  5. The New Scheduled Task Wizard appears.
  6. From the Type drop-down list, select Run Script.

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