Try opening it from dbo installation folder,there is an application called DBO,run it as administrator and it will check directly for updates for GameGuard,the launcher will not open from there.Thank User if it helped :D.
Ignore other guides they have so much talking but not much effective.. This guide I made works for every update 100000000% perfectly never failed anyone Hit Thank you if it worked for you
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Hit Thank you if it worked for you