Launcher complain insufficient space at VaultCache

My Windows and Epic Launcher are installed in SDD C:, I moved the VaultCache to another hard drive E: using this method:
https://wiki.unrealengine.com/Troubleshooting_Launcher_Problems

My SSD C: only has 18GB free space. When I tried to download the KiteDemo, the launcher complain insufficient space at C:\Program Files\Epic Games\Launcher\VaultCache, however the VaultCache already moved to E:, that has 1.1TB free space.

Can I force Launch not to check free space?

Anyone can help on this? I think Epic is using Amazon S3 for storage, so there must be a download link available.

Hi Flim,

can you enable Verbose launcher logs and run through the steps again? Send us the logs and we can look into what might be causing the issue.