Steam downloads that jump back to zero usually mean the download cache is corrupted, your connection dropped mid-transfer, or Steam is having trouble writing files to your drive

When Steam resets a download to 0%, it is almost always one of three things: the download cache folder has become corrupted and Steam cannot read what it already saved, your internet connection cut out and Steam could not resume where it left off, or your hard drive ran out of space partway through. Less often, Steam's servers are having problems on their end, or Windows permissions are blocking Steam from writing to your drive.

The good news is that most of these have straightforward fixes you can do yourself in under ten minutes. The most reliable one — clearing the download cache — works for roughly 70% of cases where downloads keep resetting.

Key Takeaways

  • Clearing Steam's download cache folder is the single most effective fix and solves the problem in most cases where downloads reset to zero.
  • Check that your hard drive has at least 20 GB of free space before starting a large download, because Steam cannot resume if the drive fills up mid-transfer.
  • Restarting your router and checking your internet connection stability matters more than most people think — a single dropped packet can force Steam to start over.
  • If clearing the cache does not work, verify that Windows has given Steam permission to write files to your drive, and that no antivirus software is blocking the download folder.

How to clear your Steam download cache

Open Steam and go to Settings (the gear icon in the top right). Click Downloads in the left menu, then find the button that says "Clear Download Cache". Steam will ask you to confirm — click OK. This takes about 30 seconds and does not delete any games you have already installed.

After clearing the cache, restart Steam completely by closing it and opening it again. Then try your download. This fixes the problem in most cases because Steam's cache file sometimes becomes corrupted and causes the client to think a download is invalid even though the files are fine.

If you are still seeing the reset to zero after clearing the cache, move on to the next step. Do not clear the cache multiple times in a row — once is enough, and doing it repeatedly will not help.

Check your hard drive space and internet connection

Before you download anything large, make sure you have at least 20 GB of free space on the drive where Steam is installed. You can check this by opening File Explorer, right-clicking your C: drive (or whichever drive Steam uses), and clicking Properties. If you have less than 20 GB free, delete files you do not need or move them to an external drive.

A full or nearly full drive is one of the most common reasons downloads reset, because Steam cannot write the file if there is nowhere to put it. Once Steam runs out of space, it stops the download and sometimes resets the progress counter.

For your internet connection, restart your router by unplugging it for 30 seconds and plugging it back in. If you are on Wi-Fi, try moving your computer closer to the router or switching to a wired connection if you can. A weak or unstable connection causes Steam to lose packets, which forces it to restart the download from the beginning.

Verify Windows permissions and antivirus settings

Right-click the Steam folder (usually at C:\Program Files\Steam or C:\Program Files (x86)\Steam) and click Properties. Go to the Security tab and click Edit. Select your username and make sure the box next to Full Control is checked. Click Apply and OK.

If you use antivirus software other than Windows Defender, check its settings to make sure it is not blocking the Steam download folder. Some antivirus programs quarantine files as they download, which can interrupt the process. You can usually add Steam's folder to the antivirus exclusion list so it stops scanning files as they arrive.

Windows Defender rarely causes this problem, but if you want to rule it out, you can temporarily turn it off while downloading. Go to Settings > Privacy & Security > Virus & Threat Protection and toggle Real-Time Protection off. Turn it back on when the download finishes.

Move your download folder to a different drive

If clearing the cache and checking permissions did not work, try moving your download folder to a different location. In Steam Settings, go to Downloads and click the folder icon next to "Steam Library Folders". Click the folder path at the top, then click Add Library Folder. Choose a different drive or partition and create a new folder there.

Sometimes the original download folder location has a problem — a bad sector on the drive, a file system error, or a permission issue that Windows does not report clearly. Moving to a fresh location often bypasses the problem entirely. After you move the folder, try downloading again.

Check Steam's servers and update your client

Occasionally Steam's download servers are having problems on their end. You can check the Steam status page at steamstat.us to see if there are any reported outages. If the download servers show red or yellow, wait an hour and try again.

Make sure you are running the latest version of Steam. Close Steam completely and open it again — it will update automatically if a new version is available. An outdated Steam client sometimes has bugs that cause downloads to reset.

If Steam shows an update is available, let it finish before trying to download games. Do not force-close Steam during an update, because that can corrupt the client itself.

What to do if nothing works

If you have tried all of these steps and downloads still reset to zero, the problem is likely a hardware issue with your hard drive or a deeper Windows problem. You can try one more thing: boot into Safe Mode and attempt a download there. Safe Mode disables most background programs and can help you figure out if something else on your computer is interfering.

To boot into Safe Mode, restart your computer, press F8 repeatedly as it starts up (before the Windows logo appears), and select Safe Mode with Networking. Open Steam and try downloading. If it works in Safe Mode, something on your computer is interfering — likely an antivirus, a background app, or a driver.

If it still fails in Safe Mode, contact Steam Support through the Help menu in Steam. Describe what you have already tried, and they can look at your download logs to see what is actually happening on their end.

Frequently Asked Questions

Does clearing the download cache delete my installed games?

No. The download cache is a temporary folder Steam uses while downloading. Clearing it does not touch any games you have already installed. Your installed games stay exactly where they are.

Why does my download reset even though I have plenty of internet speed?

Download speed and connection stability are different things. You can have fast internet but still lose packets if your connection is unstable. A single dropped connection forces Steam to restart. Try a wired connection instead of Wi-Fi, or restart your router and modem.

Can I pause a download and resume it later without it resetting?

Yes, as long as you pause it through Steam (not by disconnecting your internet). Steam saves your progress when you pause. However, if your internet cuts out unexpectedly, Steam may not be able to resume and will restart instead.

Should I disable my antivirus while downloading?

You can temporarily disable it to test whether it is the problem, but do not leave it off permanently. Instead, add your Steam folder to your antivirus exclusion list so it stops scanning downloads. This is safer than disabling the antivirus entirely.

What if the download resets only for one specific game?

That usually means the game files on Steam's servers are corrupted, or there is a problem with that particular game's download. Try uninstalling the game completely and downloading it fresh. If it still resets, contact Steam Support with the game name — they can check their servers for that title.