How to Fix a Steam Disk Write Error – How-To Geek

Join 425,000 subscribers and get a daily digest of news, geek trivia, and our feature articles.
By submitting your email, you agree to the Terms of Use and Privacy Policy.
Nick Lewis is a staff writer for How-To Geek. He has been using computers for 20 years — tinkering with everything from the UI to the Windows registry to device firmware. Before How-To Geek, he used Python and C++ as a freelance programmer. In college, Nick made extensive use of Fortran while pursuing a physics degree. Read more…
The Valve Steam logo on a blue background
A “Disk Write Error” while downloading or updating a game in Steam has several possible causes. Luckily, a majority of them aren’t indicative of a serious problem with your PC. In most cases, a disk write error occurs because of a permissions problem or file corruption and can be easily resolved.

Restart Steam and Your PC
Check Write Permissions
  Always Run Steam as Administrator
  Change the Permissions for Your User
Clear Download Cache
Repair Library Folder
Change Your Download Server

It’s a cliché for a reason — turning it off and back on again works. If you suddenly experience a disk write error, try restarting Steam. Right-click the Steam icon in the system tray (notification area) on your taskbar and click “Exit.” You can also click Steam > Exit in the Steam application window.

If restarting Steam doesn’t work, restart your PC. Restarting your computer reinitializes hardware drivers, ends all of the running programs, and clears the memory. If the disk write error was caused by an error with Windows (or any other operating system,) there is a good chance restarting your computer will fix it.
RELATED: Why Does Rebooting a Computer Fix So Many Problems?
A team disk write error could also be due to a permissions issue. If a Steam library folder has been set to read-only, or the user account you run Steam from doesn’t have write permissions for the library folder, Steam can experience a disk write error. Let’s check and see if that is the problem.
First, close Steam if it is running. Then, right-click the icon you normally use to launch Steam and click “Run as Administrator.”
Click "Run as Administrator."
Try the download again. If it works, you have a permissions problem. If that didn’t solve the issue, you can skip ahead to one of the other sections — the instructions in this one aren’t relevant to you.
The first — and easiest — way to fix a permissions problem is to always run Steam as administrator.
Right-click your Steam icon and click “Properties.”

Go to the “Compatibility” tab, tick “Run as Administrator,” then click “Apply” and “Ok.”
Select the "Compatibility" tab, tick "Run as Administrator," then click "Apply" and "Okay."
For security reasons, it’s not a great idea to always run applications as administrator if you can help it. However, the second solution is more involved. Every file and folder in Windows has user-specific permissions. If something has gone wrong between your user and the Steam folder (or any sub-folders), you can fix it manually.
First, you need to navigate to your Steam folder. It is located in “C:Program Files (x86)” by default. Right-click the Steam folder and hit “Properties.”
Make sure the box for “Read-Only” is not ticked. If “Read-Only” is enabled, untick it, and click “Apply.”
Untick the "Read-only" box, then click "Apply."
Check the write permissions while you’re in the Properties window. Click on the “Security” tab, located along the top. Scroll through the list in the “Groups or User names” section and select your user. Look at the portion of the window labeled “Permissions for Users.” This is what controls all of the permissions for the folder, sub-folders, and files. All of the boxes should be ticked except “Special Permissions”. Don’t worry about that one.
Click the "Security" tab, find and select your user from the list, and then check the permissions.
If they aren’t all ticked, you need to force Windows to change the permissions for that folder, the sub-folders, and all of the files. Normally sub-folders and files will inherit the permissions of the folder that contains it, so you only need to change the permissions of the parent folder, Steam.
Click “Edit,” enable “Full Control,”  then click “Apply” and “Ok.”
Tick "Full Control," click "Apply," and then click "OK" to close the Window.
The download cache is where Steam stores temporary files while a game or update is downloading or installing. Click Steam > Settings in the top left.
Click "Steam," then click "Settings."
Click the “Downloads” tab, then, at the bottom, click “Clear Download Cache.”
Click "Downloads," then clear "Clear Download Cache."
You’ll be prompted to restart Steam. After the restart, try your download again.
If changing your permissions and clearing your download cache didn’t work, you can try repairing your library folder.
Click “Steam” in the top left corner of the Steam window, and select “Settings” from the drop-down menu.
Click "Steam," then click "Settings."
Click “Downloads,” then click “Steam Library Folders.”
Click "Downloads" on the left side, then click "Steam Library Folders."
This window will show you all of the games you have downloaded. If you’re using multiple hard drives or multiple steam folders, they’ll be displayed here. Select the one that is giving you trouble by clicking it — it’ll be along the top. Then click the three dots on the right-hand side to open a drop down menu, and click “Repair folder.”
Click the three dots, then click "Repair Folder."
The more games you have installed the longer this will take, so be prepared to wait a few minutes. After it is done, attempt your download again.
Though it is uncommon, sometimes the Steam download servers experience problems or outages. If that is the case, it can produce a variety of error messages. If you’ve tried all of the other steps, it doesn’t hurt to try changing your download server.
Click “Settings” in the top left-hand corner of the screen, then click “Steam Library Folder.”
Click "Steam," then click "Settings."
Navigate to the “Downloads” page, then click the drop-down menu in the section titled “Download Region.” Normally, Steam will select the download server nearest to you. We need to change it to something else — try to pick something close to you.
Go to the "Downloads" page, then click the drop-down menu and select a new download server.
If none of that works, you may have a problem with your hard drive. As a precaution, you should back up any irreplaceable or important files you have stored on the hard drive. Then you can try to fix the problem using chkdsk.
Facebook
Instagram
Twitter
LinkedIn
RSS Feed
The Best Free Tech Newsletter Anywhere
By submitting your email, you agree to the Terms of Use and Privacy Policy.

source