VRoid Studio might fail to save due to the presence of antivirus software.
Please try the following methods.
① Change the security (firewall) settings of your PC
② Remove VRoid Studio from the monitored targets of your antivirus software
· Please refer to the instructions of your PC regarding security settings and antivirus software operation.
· Do not to carelessly change settings or unblock VRoid studio by editing contents in Zip folders with an unknown source.
Also, please make sure you're using the latest version of VRoid Studio.
You can download the latest version here: