FTB Launcher Problem | No ModPacks Loading

  • The FTB Forum is now read-only, and is here as an archive. To participate in our community discussions, please join our Discord! https://ftb.team/discord

UniZero

Popular Member
Oct 3, 2012
3,406
310
124
Scotland, UK
Post a screen shot of your system from the last one from the site I linked. The local area connection one or wireless if you are using that.
 

lavarthan

New Member
Jul 29, 2019
2,437
0
0
After getting the screenshot that UniZero requested please try below.

Yeah I did and it told me it was invalid.
You can do the IPv4 thing inside the launcher or manually add it to the Java Global Options. Inside the Options tab click on the Advanced Options button and inside the text box next to Additional Java Parameters you add -Djava.net.preferIPv4Stack=true Or you can do it in the Global Variables that will require admin access. Right click on the Computer inside the start menu and go to Properties. Now click on Advanced system settings and enter the admin password if needed. Click on the Environmental Variables... button. Inside the second box find JAVA_OPTS and double click on it. Inside the tab that opens up second box below the JAVA_OPTS add -Djava.net.preferIPv4Stack=true Now click on OK and close everything. Not sure if a restart is required, but it probably would not hurt.
 

UniZero

Popular Member
Oct 3, 2012
3,406
310
124
Scotland, UK
After getting the screenshot that UniZero requested please try below.


You can do the IPv4 thing inside the launcher or manually add it to the Java Global Options. Inside the Options tab click on the Advanced Options button and inside the text box next to Additional Java Parameters you add -Djava.net.preferIPv4Stack=true Or you can do it in the Global Variables that will require admin access. Right click on the Computer inside the start menu and go to Properties. Now click on Advanced system settings and enter the admin password if needed. Click on the Environmental Variables... button. Inside the second box find JAVA_OPTS and double click on it. Inside the tab that opens up second box below the JAVA_OPTS add -Djava.net.preferIPv4Stack=true Now click on OK and close everything. Not sure if a restart is required, but it probably would not hurt.

I did ask him to add that line to the jvm flags but maybe it needs to be in environment variables as well. Here's hoping that is it.
 

NoFearisus

New Member
Jul 29, 2019
21
0
0
After getting the screenshot that UniZero requested please try below.


You can do the IPv4 thing inside the launcher or manually add it to the Java Global Options. Inside the Options tab click on the Advanced Options button and inside the text box next to Additional Java Parameters you add -Djava.net.preferIPv4Stack=true Or you can do it in the Global Variables that will require admin access. Right click on the Computer inside the start menu and go to Properties. Now click on Advanced system settings and enter the admin password if needed. Click on the Environmental Variables... button. Inside the second box find JAVA_OPTS and double click on it. Inside the tab that opens up second box below the JAVA_OPTS add -Djava.net.preferIPv4Stack=true Now click on OK and close everything. Not sure if a restart is required, but it probably would not hurt.
When I do what you said by right click on the Computer and going to Properties and all I don't have the JAVA_OPTS. I can provide a quick gyazo showing that I don't have it if you would like.

http://gyazo.com/c3d8231c57fccde1aa41eb23a2eb6a5d
 

lavarthan

New Member
Jul 29, 2019
2,437
0
0
Click on the New button below the second box to create it. Name it JAVA_OPTS and for the value -Djava.net.preferIPv4Stack=true
Hope that fixes it.

Edit: Sorry UniZero I did not see you telling him that. :oops: :p
 

NoFearisus

New Member
Jul 29, 2019
21
0
0
Still not fixed. Still the same problem I had at the very start.

Edit: Now I can't even re download the launcher...
 

UniZero

Popular Member
Oct 3, 2012
3,406
310
124
Scotland, UK
That was not the screen shot I was asking for.

Edit: This was:-
u69j.jpg
 

NoFearisus

New Member
Jul 29, 2019
21
0
0
That wasn't for you Uni. That was for lavarthan. Any ways doing that ipv4 thing fucked everything up. I can't download the launcher now without it saying my google chrome couldn't find the site.