No usable authlib available

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A

aoo20

Guest
Title No usable authlib available

Launcher Type FTB Launcher

Modpack

Modpack version

Have you modified the pack?

Link to log file https://paste.feed-the-beast.com/view/6b436ae1

Details of the issue The launcher won't let me launch or download any modpacks, saying that there are no usable authlibs.
 
Last edited by a moderator:
grandrolf

grandrolf

Global moderator
Team Member
Global Moderator
Trusted User
Aug 29, 2014
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sweden
You have both java 8 and java 9 installed, and it defaults to the latest version.

Open options tab and then click "Advanced options" and set the launcher to use java 8.

Post new log if it still fails.
 
C

Currently_Gaming

Guest
I have the same problem. It says that but my advanced settings will not change either. It is staying on java 11
No matter what i do.
 
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