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Delphi 10.4.1 Socket Error on IDE Start

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Hi all. I've just installed Delphi 10.4.1 Enterprise but cannot get it to start. On start up at the splash screen I get the following error;



After clicking OK this is followed by various other error dialogs;








Anyone else come across this same issue?


I've got a few other IDEs installed, would these have anything to do with this error?

- Delphi XE3

- Visual Studio 2019

- Visual Studio 2015

After a quick Google search I found a post on the old Embarcadero forum of someone reporting a similar issue, but that forum is no longer reachable, so I'm stuck here with this.

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Hi everyone, I've contacted Embarcadero support who have advised of the fix. Hopefully this will help anyone in the future who comes across this.

1) shut the IDE down.

2) run regedit.

3) go to

HKEY_CURRENT_USER \ SOFTWARE \ Embarcadero \ BDS \ 21.0 \ Known IDE Packages

4) find the entry

"$ (BDS) \ Bin \ LivePreview270.bpl" and change the data from "Embarcadero FireUI Live Preview Package"


"__Embarcadero FireUI Live Preview Package" (so just add two underscores in front of text)

5) start the IDE.

  • Thanks 1

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Confirmed to work in Delphi 11.0 as well, with the obvious adjusts for version:

  • HKEY_CURRENT_USER \ SOFTWARE \ Embarcadero \ BDS \ 22.0 \ Known IDE Packages; and
  • "$ (BDS) \ Bin \ LivePreview280.bpl" and change the data from "Embarcadero FireUI Live Preview Package"

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