It's a problem that really bites
Fix 0 Byte Download | UPDATED | Downloads Not Starting Fix | Steam Complete Guide
When you start downloading or updating a video game on Steam, you can usually expect it to go smoothly. You can even increase the download speed of Steam to reduce the wait time. But rarely, you may encounter issues where Steam downloads get stuck at a whopping 0 bytes!
If you've just noticed a completely stuck download queue in Steam and you can't figure out why, you can fix the problem by going through the suggestions and solutions below.
Pausing and resuming a stuck Steam download may be enough to get it going again. To do this, open Steam’s View menu and select Downloads. Then select Pause. Then wait a few seconds and select Resume.