I realise this is a bit off-topic, but I am wondering whether any of you have any experience of this. I have always built Delphi 32bit Apps.

Last week I started building 64bit, and it was great. The Apps are huge in terms of size on-disk, but they do run faster.

Then I deployed an App on Amazon AWS.

It is a "Windows Server 2019 Datacenter" machine, 64bit, x64 based processor 4gig of RAM. When I run any 64bit App I get an error :

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C:\xxxxxx\64.exe
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System Error.  Code: 126.

The specified module could not be found
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OK   
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I have Googled this, and been told to switch on a module management service, which I have done, but this has not fixed the problem.

Does anyone have experience of this? The App is quite a vanilla Web-broker App, serving out the contents of an EDB Database which is stored on the AWS server.

I was confident about Delphi 64bit Apps, but had only actually run them on a few test machines. I don't want to roll them out if this is a common problem

Adam