What Is the $WINDOWS.~BT Folder, and Can You Delete It?


The $WINDOWS.~BT and $WINDOWS.~WS folders are related to the Windows ten upgrade method. they will seem on either Windows seven, 8, or 10, exploitation gigabytes of disc space.

These are hidden files; thus you’ll need to show hidden files in Windows adventurer or File adventurer to examine them.

On Windows 7 and 8

During the free Windows ten upgrade amount, Windows seven and eight mechanically downloaded Windows ten installation files and keep them within the $WINDOWS.~BT folder. once you united to the free upgrade, it may begin quickly victimization the already downloaded installation files.

The free upgrade amount is currently over, therefore you couldn’t use these files to upgrade to Windows ten though you wished to.

Microsoft ought to eventually take away these files if they’re still gift on any Windows seven or eight systems, however they’ll still be protrusive around for currently.

On Windows 10

On Windows ten, the $WINDOWS.~BT folder contains your previous Windows installation. These files square measure accustomed downgrade to a previous version of Windows, or a previous build of Windows ten.

It’s almost like the Windows.old folder, that contains files from your previous Windows installation. In fact, you’ll see each folders once upgrading to Windows 10–both Windows.old and $WINDOWS.~BT folders.

It conjointly contains log files. parenthetically, if you transfer and run the media creation tool, it creates a $WINDOWS.~BT folder with some setup log files. That media creation tool conjointly creates a $WINDOWS.~WS folder that includes most of the Windows setup files.

Windows ought to mechanically delete these files to unencumber area once 10 days within the day of remembrance Update, or thirty days if your computer hasn’t upgraded to the day of remembrance Update however.


Can You Delete It, and How?

Warning: If you decide on to delete the $WINDOWS.~BT folder on Windows ten, you won’t be ready to downgrade to the previous build of Windows ten or previous version of Windows your laptop had put in. the choice to roll your laptop back at Settings > Update & Security > Recovery can vanish. However, Windows ten mechanically deletes these files when 10 days anyway.

If you wish to delete these files, though, you can. however you shouldn’t simply delete them the conventional means. Instead, you must use the Disk Cleanup tool enclosed with no matter version of Windows you’re exploitation.

To do so, access the Disk Cleanup tool and click on finish off System Files. Check the chosen things within the list and take away them:

Previous Windows installation(s): This deletes the “$WINDOWS.~BT and Windows.old” folders on Windows ten.

Temporary Windows installation files:  This deletes the $WINDOWS.~BT folder on Windows seven and eight, and therefore the $WINDOWS.~WS folder on Windows ten.

Click “OK” to get rid of the files.


If the $WINDOWS.~BT folder remains gift later, it seemingly simply contains some spare log files–or now-useless setup files on Windows seven or 8–and you’ll strive deleting it manually from File individual. simply right-click it and choose “Delete”.

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