Cannot create bootable USB with Boot Camp, "there is not enough space available on the disk" I am trying to install Windows 10 on my MacBook (macOS Mojave 14.4.4). I have used Windows 10 till last week and I had to remove all the partitions with a complete refresh of macOS too.

Since then I have been trying to use the Boot Camp method to install Windows 10.  I'm getting this error all the time:


  Your bootable USB drive could not be created
  There is not enough space available on the disk.


When I check Disk Utility the current HD has 196GB free.

I'm using the latest macOS update from Apple site.

How to resolve this?

System log:

2019-04-05 08:54:41 [Microsoft Update Assistant] &lt;Info&gt; Initializing configuration
2019-04-05 08:54:41 [Microsoft Update Assistant] &lt;Info&gt; Registered App nameID: Microsoft AutoUpdate_MSau04 | Copies: 1 | Installations: Location: /AppSupport Version: 4.9.19030902
2019-04-05 08:54:41 [Microsoft Update Assistant] &lt;Info&gt; HelperTool Status: helperToolExists YES, helperToolCodesigned: YES
2019-04-05 08:54:41 [Microsoft Update Assistant] &lt;Info&gt; Attempted to register: MSau04, Preferences Available: YES, Re-Registration: YES, Success:NO
2019-04-05 08:54:41 [Microsoft Update Assistant] &lt;Info&gt; Microsoft Update Assistant launched
2019-04-05 08:54:42 [Microsoft Update Assistant] &lt;Info&gt; Skip webservice. Only 23 since last call.
2019-04-05 08:54:42 [Microsoft Update Assistant] &lt;Info&gt; Invalid action type (null)
2019-04-05 08:54:42 [Microsoft Update Assistant] &lt;Info&gt; MWSOnBoot handled action name Null
2019-04-05 08:54:42 [Microsoft Update Assistant] &lt;Info&gt; launched via LaunchAgent
2019-04-05 08:54:42 [Microsoft Update Assistant] &lt;Info&gt; Changing timeNextUpdate from 2019-04-04 20:46:02 +0000 to 2019-04-05 07:54:42 +0000
2019-04-05 08:54:42 [Microsoft Update Assistant] &lt;Info&gt; Scheduling timer to fire 0.000000 seconds from now.
2019-04-05 08:54:42 [Microsoft Update Assistant] &lt;Info&gt; Update check timer fired at 2019-04-05 07:54:42 +0000
2019-04-05 08:54:42 [Microsoft Update Assistant] &lt;Info&gt; Checking for updates
2019-04-05 08:54:42 [Microsoft Update Assistant] &lt;Info&gt; Server is Reachable
2019-04-05 08:54:42 [Microsoft Update Assistant] &lt;Info&gt; Checking for updates.
2019-04-05 08:54:42 [Microsoft Update Assistant] &lt;Info&gt; Downloading Chks - Will Attempt to download chks for 1 registered apps
2019-04-05 08:54:42 [Microsoft Update Assistant] &lt;Info&gt; Fetching file Success. File: https://officecdn-microsoft-com.akamaized.net/pr/C1297A47-86C4-4C1F-97FA-950631F94777/MacAutoupdate/0409MSau04-chk.xml
2019-04-05 08:54:42 [Microsoft Update Assistant] &lt;Info&gt; Downloading Chks - Result: 1. Missing Manifests: 0. Downloaded chks: 1.
2019-04-05 08:54:42 [Microsoft Update Assistant] &lt;Info&gt; Downloading chk files got 1 files. Will check if any indicates an update is available.
2019-04-05 08:54:42 [Microsoft Update Assistant] &lt;Info&gt; Downloading chk files - Found 0 apps and 0 suites that should be checked for updates
2019-04-05 08:54:42 [Microsoft Update Assistant] &lt;Info&gt; No updates found.
2019-04-05 08:54:42 [Microsoft Update Assistant] &lt;Info&gt; Changing lastUpdate from 2019-04-04 08:46:02 +0000 to 2019-04-05 07:54:42 +0000
2019-04-05 08:54:42 [Microsoft Update Assistant] &lt;Info&gt; Starting timer (not forcing one day)
2019-04-05 08:54:42 [Microsoft Update Assistant] &lt;Info&gt; Scheduling timer to fire 43199.998382 seconds from now.
2019-04-05 08:55:12 [Microsoft Update Assistant] &lt;Info&gt; Microsoft AU Daemon terminated normally
The error message is not warning of insufficient space on your internal disk, but rather that of your external USB drive. Make sure there is sufficient space on your external drive and that it is of a sufficient size (at least 16 GB, possibly more depending on the Windows installer you are using).

The system log snippet provided is not relevant to Boot Camp but rather that of Microsoft AU, the updater for Microsoft Office.