This error is typically caused by restricted browser permissions, insufficient quota in the Windows Temp folder, or the use of unsupported 'Cloud Environments'. Even if your target drive has space, the system's cache writing is blocked during the pre-download stage, triggering a false alert.
Solutions:
1. Change Download Path (Most Effective): Browsers usually default to the C drive. Change the download directory in your settings to a non-system drive (like D or E) to bypass C drive permission and space limits.
2. Clean the Temp Folder: Press Win + R, type %temp% and hit Enter. Delete temporary files in this folder. If the temp directory is full, downloads will fail immediately.
3. Run as Administrator: Right-click your browser icon and select 'Run as administrator' before downloading. This resolves write failures caused by system protection.
4. Environment Check: Note that GameBuff requires a physical hardware environment; cloud PCs, cloud gaming, and virtual machines are not supported.
Official Site: https://gamebuff.cn
