[MC-125706] Server hang at launch

Launching server using

java -Xmx4096M -Xms4096M -jar minecraft_server.18w07c.jar -o true

Server hangs after displaying the following

[17:52:18] [main/WARN]: Ambiguity between arguments [teleport, destination] and [teleport, targets] with inputs: [Player, 0123, @e, dd12be42-52a9-4a91-a8a1-11c01849e498]
[17:52:18] [main/WARN]: Ambiguity between arguments [teleport, location] and [teleport, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[17:52:18] [main/WARN]: Ambiguity between arguments [teleport, location] and [teleport, targets] with inputs: [0.1 -0.5 .9, 0 0 0]
[17:52:18] [main/WARN]: Ambiguity between arguments [teleport, targets] and [teleport, destination] with inputs: [Player, 0123, dd12be42-52a9-4a91-a8a1-11c01849e498]
[17:52:18] [main/WARN]: Ambiguity between arguments [teleport, targets, location] and [teleport, targets, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[17:52:18] [main/INFO]: Loaded 0 recipes
[17:52:18] [main/INFO]: Loaded 0 advancements

World does not generate, no further feedback, must use Ctrl-C to kill process. Very rarely (<5%) the process will launch, and the GUI will appear. Later version I was able to launch was 18w02a.

Tried launching without the "-o true", and adding "nogui" without success. I've made sure that this java release is whitelisted with the Windows Firewall.

Linked issues

duplicates

MC-124720 Cannot start server with GUI

is duplicated by

MC-126000 Server won't start

MC-126044 Snapshots wont launch server

Comments

bemoty 2018-02-17T22:53:50Z

Confirmed. Sometimes the server launches successfully and displays the GUI when running java -Xmx4096M -Xms4096M -jar minecraft_server.18w07c.jar -o true.

If I add --nogui to the command, the server will launch successfully every time I try.

migrated 2018-02-23T16:38:45Z

I've tried with nogui and still cant get a launch, can you share that complete script? see if i'm doing something wrong?

migrated 2018-02-23T17:00:07Z

I've tried the two snapshots this week (18w08a and 18w08b), and both of them appear to be working with my original parameters. I have not had a chance to jump into the game and try things, but the server launches successfully.

migrated 2018-02-24T21:46:05Z

Update: Now trying to launch the server in order to play, and it is still >80% hang as previously described. I'm not sure if running an instance of the Java Edition in addition to the server on the same machine is a factor.

migrated 2018-03-01T23:29:51Z

continue to have the same hang with 18w09a