Problem The JVM could not be started.

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Myst1ck

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Jul 27, 2020
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When I try to open my FTB launcher, it closes and say: The JVM could not be started. The maximum head size (-Xmx) might be too large or an antivirus or firewall tool could block the execution. I don't know what to do. I tried to delete and reinstall but it doesn't work neither. I tried to reinstall java - didn't work neither. How can I fix this?
 

grandrolf

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Aug 29, 2014
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sweden
For the issue:

"The JVM could not be started. The maximum heap size (-Xmx) might be too large or an antivirus or firewall tool could block the execution."

If you have special characters in your username on the machine - follow these instructions:

press windows key +r and type %appdata% and then OK

Remove these 2 folders:
FTBA
ftb-app

Also check if there's a folder called .ftba under c:\users\YOURUSERNAME

Remove that .ftba folder as well

Go to programs and features in the control panel and uninstall FTBApp...

This will give a error and then it's removed from the list.

Now you can install to any other location, example c:\games\SOMEFOLDERNAME
 
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