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Failed to start the Marketing Automation Engine service - Sitecore 10 installation failed on Windows 11

Starting Marketing Automation Engine...
2022-02-07 15:54:34 ERR Error initializing XConnect client.
System.AggregateException: One or more errors occurred. ---> Sitecore.XConnect.XdbCollectionUnavailableException: An error occurred while sending the request. ---> Sitecore.Xdb.Common.Web.ConnectionTimeoutException: A task was canceled. ---> System.Threading.Tasks.TaskCanceledException: A task was canceled.
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  • It appears like you solved this issue. You may want to post an answer to your own question so that people can see the answer easily?
    – Jason St-Cyr
    Commented Feb 7, 2022 at 11:55
  • This also applies to Sitecore 9.3 running on Windows 11
    – Simon MᶜKenzie
    Commented Jun 17, 2022 at 21:37

1 Answer 1

Reset to default
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Solution: The issue was resolved by disabling TLS 1.3 over TCP.

New-Item 'HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.3\Server' -Force | Out-Null

New-ItemProperty -path 'HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.3\Server' -name 'Enabled' -value '0' -PropertyType 'DWord' -Force | Out-Null

New-ItemProperty -path 'HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\TLS 1.3\Server' -name 'DisabledByDefault' -value 1 -PropertyType 'DWord' -Force | Out-Null

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