Thanks for the tipp, this could be the problem. I looked at my folder and found it.
I think this folder whas not there until i started a game an faf created this one.

Hallo,

i have the newest java patch, but it looks like i can´t watch any replays. I got this errormessage.

Client Version: 2023.7.1
NotifiableException(i18nKey=replay.live.startError, i18nArgs=[])
at com.faforever.client.game.GameService.lambda$runWithLiveReplay$42(GameService.java:514)
at java.base/java.util.concurrent.CompletableFuture$UniRun.tryFire(CompletableFuture.java:787)
at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:510)
at java.base/java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:2147)
at com.faforever.client.task.CompletableTask.lambda$new$2(CompletableTask.java:19)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:232)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:189)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.concurrent.EventHelper.fireEvent(EventHelper.java:219)
at javafx.concurrent.Task.fireEvent(Task.java:1359)
at javafx.concurrent.Task.setState(Task.java:725)
at javafx.concurrent.Task$TaskCallable.lambda$call$1(Task.java:1437)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:456)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:455)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:185)
at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: java.io.IOException: Cannot run program "C:\ProgramData\FAForever\replaydata\bin\ForgedAlliance.exe" (in directory "C:\ProgramData\FAForever\bin"): CreateProcess error=267, Der Verzeichnisname ist ungültig
at java.base/java.lang.ProcessBuilder.start(ProcessBuilder.java:1143)
at java.base/java.lang.ProcessBuilder.start(ProcessBuilder.java:1073)
at com.faforever.client.fa.ForgedAllianceService.launch(ForgedAllianceService.java:159)
at com.faforever.client.fa.ForgedAllianceService.startReplay(ForgedAllianceService.java:107)
at com.faforever.client.game.GameService.lambda$runWithLiveReplay$42(GameService.java:510)
... 23 more
Caused by: java.io.IOException: CreateProcess error=267, Der Verzeichnisname ist ungültig
at java.base/java.lang.ProcessImpl.create(Native Method)
at java.base/java.lang.ProcessImpl.<init>(ProcessImpl.java:494)
at java.base/java.lang.ProcessImpl.start(ProcessImpl.java:159)
at java.base/java.lang.ProcessBuilder.start(ProcessBuilder.java:1110)
... 27 more