I just bought The Witcher 3, and as it's installing the files, around a few minutes it says that I don't have enough Disk Space. I clearly do as I have over 600GB worth of space in my C Drive, where I am installing TW3

I've tried looking online to no avail. I would appreciate some help. Thanks in advance.

EDIT 1: Still not working. Would love some alternate solutions. Whenever I change disks, or even in between the download, this error occurs: Installation Failed. Error Code : -10

EDIT 2: My problem is exactly like the guy in this link: https://www.gog.com/forum/the_witcher/help_witcher_3_installation_help_retail_copy But his solution didn't work for me. Please, someone help.

  • 1
    Did you buy it on GOG, Steam or physical media? Mar 23, 2016 at 13:00
  • Physical Media.
    – Wulfinite
    Mar 23, 2016 at 16:14

3 Answers 3


Try to run it as administrator (right mouse click -> run as administrator). It worked for the guy here

  • I tried that before but it froze, I'll try again and get back to you. Thanks.
    – Wulfinite
    Mar 23, 2016 at 12:53

Do you have partitions on your Hard Disc or more than one Disc in your PC?

I've Found a similar problem on the internet where the installation tries to use a Temporary Folder from a Disc with no space available. Only it was with the patch 1.07.

Here is a discussion: https://steamcommunity.com/app/292030/discussions/0/535151589886190298/ where its last answer concerned the Temporary Folder:

Do a hard drive test on both hard drives, just in case.

Otherwise, you said you have 2 disk drives. How much space is left on your other disk drive? Is that where Steam is installed? If not, perhaps Steam is using system temp folder for what ever reason, and you do not have enough disk space on that drive. Here are instructions: 1. Right click on Computer and click on Properties. In the resulting window with the basic information about your computer 2. Click on Advanced system settings on the left panel resulting in a dialog box click on the Advanced tab a 3. Click on the button near the bottom labeled Environment Variables. 4. You may see both TMP and TEMP listed in the section labeled User variables for (account). That's the common location; each different login account is assigned its own temporary location. 5. In the Variable value Edit box you may specify the path to the directory that Windows and many other programs will use for temporary files.

Be sure and repeat that process for both TMP and TEMP. You'll need to restart any running programs for the new value to take effect. In fact, you'll need to restart Windows for it to begin using the new value for its own temporary files.

And a video about changing the temporary folder:

and the installation working.

Hope it helps

  • I did this, and it worked till disk 3. Then when I entered disk three, the error came once again. Goddamnit, now I have to do it again. It was 2/3 away..
    – Wulfinite
    Mar 23, 2016 at 13:58

Found an answer myself, if anyone is experiencing this problem with the retail version, I suggest you do the following:

  • Enter your Game Code (back of the manual) on the GOG Client or Browser
  • Once you enter, you will receive a receipt to your email. Keep it (it's important).
  • Now if you do not have the GOG Client (Galaxy Client), download it.
  • TW3 Will now appear in your Order History, you can now install it via the client

You will now not need to install from the three disks.

Hope this helped everyone!

  • Please mark this as the preferred solution, then.
    – Jon V
    Apr 26, 2016 at 2:52

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