Blender

How to uninstall Blender from your computer

Blender is a software application. This page contains details on how to uninstall it from your PC. The Windows version was created by Blender Foundation. Further information on Blender Foundation can be seen here. The application is usually installed in the C:\Program Files\Blender Foundation\Blender 2.81 directory (same installation drive as Windows). The full command line for uninstalling Blender is MsiExec.exe /I{A6B045E1-6F1C-4FCD-936A-EE272B675EC8}. Keep in mind that if you will type this command in Start / Run Note you might get a notification for admin rights. Blender's primary file takes about 119.16 MB (124946424 bytes) and is named blender.exe.

The executables below are part of Blender. They take about 120.11 MB (125947808 bytes) on disk.

• blender.exe (119.16 MB)
• python.exe (100.99 KB)
• t32.exe (100.49 KB)
• t64.exe (109.99 KB)
• w32.exe (96.99 KB)
• w64.exe (106.99 KB)
• cli-32.exe (73.99 KB)
• cli-64.exe (82.99 KB)
• cli.exe (73.99 KB)
• gui-32.exe (73.99 KB)
• gui-64.exe (83.49 KB)
• gui.exe (73.99 KB)

...click to view all...

The information on this page is only about version 2.81.1 of Blender. Click on the links below for other Blender versions:

• 2.83.20
• 3.1.1
• 2.93.8
• 3.3.5
• 2.76.1
• 3.3.9
• 3.3.12
• 2.83.5
• 4.1.1
• 2.76.0
• 2.73
• 2.69
• 2.92.0
• 3.4.1
• 3.3.10
• 3.1.0
• 2.83.15
• 2.83.9
• 2.65
• 3.3.4
• 3.3.8
• 3.3.1
• 3.3.7
• 2.77.0
• 2.64
• 2.91.2
• 3.2.1
• 2.83.2
• 2.80.0
• 3.5.1
• 3.0.0
• 2.83.13
• 3.0.1
• 2.83.14
• 2.60
• 3.6.3
• 2.83.3
• 2.58
• 3.3.15
• 4.0.1
• 2.93.6
• 2.75.0
• 3.6.8
• 2.93.5
• 2.90.0
• 2.93.17
• 2.83.6
• 3.3.16
• 3.6.2
• 2.83.18
• 3.2.2
• 2.82.1
• 3.3.14
• 2.61
• 3.6.7
• 2.93.2
• 2.76.2
• 3.4.0
• 2.93.7
• 3.6.4
• 2.70
• 2.93.11
• 2.74
• 2.63
• 4.0.2
• 3.5.0
• 2.91.0
• 2.49
• 2.83.17
• 3.2.0
• 2.93.10
• 2.93.3
• 3.3.3
• 2.67
• 2.79.1
• 3.6.0
• 2.79.2
• 2.93.0
• 4.1.0
• 2.82.0
• 2.83.10
• 3.3.2
• 2.93.14
• 3.6.1
• 3.1.2
• 2.78.3
• 2.68
• 2.93.12
• 2.78.1
• Unknown
• 3.6.10
• 2.75.1
• 2.83.8
• 2.62
• 2.78.2
• 2.78.0
• 2.83.1
• 3.6.9
• 2.66
• 2.59

...click to view all...
Following the uninstall process, the application leaves some files behind on the PC. Some of these are shown below.

Directories that were found:

• C:\Program Files\blender 2.8
• C:\Program Files\Blender Foundation
• C:\Users\%user%\AppData\Local\Temp\blender_a14948
• C:\Users\%user%\AppData\Roaming\Blender Foundation

The files below are left behind on your disk when you remove Blender:

• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\colormanagement\config.ocio
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\colormanagement\filmic\filmic_desat65cube.spi3d
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\colormanagement\filmic\filmic_false_color.spi3d
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\colormanagement\filmic\filmic_to_0.99_1-0075.spi1d
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\colormanagement\filmic\filmic_to_0-35_1-30.spi1d
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\colormanagement\filmic\filmic_to_0-48_1-09.spi1d
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\colormanagement\filmic\filmic_to_0-60_1-04.spi1d
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\colormanagement\filmic\filmic_to_0-70_1-03.spi1d
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\colormanagement\filmic\filmic_to_0-85_1-011.spi1d
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\colormanagement\filmic\filmic_to_1.20_1-00.spi1d
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\colormanagement\luts\aces_to_xyz.spimtx
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\colormanagement\luts\dci_xyz.spi1d
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\colormanagement\luts\lg10.spi1d
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\colormanagement\luts\rec709.spi1d
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\colormanagement\luts\rec709_to_aces.spimtx
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\colormanagement\luts\srgb.spi1d
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\colormanagement\luts\srgb_inv.spi1d
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\colormanagement\luts\srgb_to_xyz.spimtx
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\colormanagement\luts\vd16.spi1d
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\fonts\bmonofont-i18n.ttf.gz
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\fonts\droidsans.ttf.gz
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.gpencil_draw.draw.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.gpencil_draw.erase.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.gpencil_draw.fill.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.paint_texture.airbrush.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.paint_texture.clone.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.paint_texture.draw.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.paint_texture.fill.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.paint_texture.mask.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.paint_texture.masklort.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.paint_texture.multiply.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.paint_texture.smear.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.paint_texture.soften.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.paint_vertex.alpha.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.paint_vertex.average.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.paint_vertex.blur.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.paint_vertex.draw.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.paint_vertex.smear.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.paint_weight.average.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.paint_weight.blur.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.paint_weight.draw.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.paint_weight.mix.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.paint_weight.smear.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.particle.add.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.particle.comb.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.particle.cut.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.particle.length.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.particle.puff.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.particle.smooth.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.particle.weight.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.sculpt.blob.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.sculpt.clay.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.sculpt.clay_strips.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.sculpt.crease.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.sculpt.draw.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.sculpt.draw_sharp.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.sculpt.elastic_deform.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.sculpt.fill.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.sculpt.flatten.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.sculpt.grab.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.sculpt.inflate.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.sculpt.layer.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.sculpt.mask.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.sculpt.nudge.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.sculpt.pinch.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.sculpt.pose.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.sculpt.rotate.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.sculpt.scrape.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.sculpt.simplify.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.sculpt.smooth.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.sculpt.snake_hook.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.sculpt.thumb.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.uv_sculpt.grab.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.uv_sculpt.pinch.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\brush.uv_sculpt.relax.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\none.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\ops.armature.bone.roll.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\ops.armature.extrude_cursor.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\ops.armature.extrude_move.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\ops.curve.draw.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\ops.curve.extrude_cursor.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\ops.curve.extrude_move.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\ops.curve.radius.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\ops.curve.vertex_random.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\ops.generic.cursor.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\ops.generic.select.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\ops.generic.select_box.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\ops.generic.select_circle.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\ops.generic.select_lasso.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\ops.gpencil.draw.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\ops.gpencil.draw.eraser.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\ops.gpencil.draw.line.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\ops.gpencil.draw.poly.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\ops.gpencil.edit_bend.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\ops.gpencil.edit_mirror.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\ops.gpencil.edit_shear.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\ops.gpencil.edit_to_sphere.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\ops.gpencil.extrude_move.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\ops.gpencil.primitive_arc.dat
• C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\2.82\datafiles\icons\ops.gpencil.primitive_box.dat

Registry keys:

• HKEY_CLASSES_ROOT\Applications\blender.exe
• HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.microsoftedge_8wekyb3d8bbwe\Children\001\Internet Explorer\DOMStorage\blender.org
• HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.microsoftedge_8wekyb3d8bbwe\Children\001\Internet Explorer\DOMStorage\docs.blender.org
• HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.microsoftedge_8wekyb3d8bbwe\Children\001\Internet Explorer\EdpDomStorage\blender.org
• HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.microsoftedge_8wekyb3d8bbwe\Children\001\Internet Explorer\EdpDomStorage\docs.blender.org
• HKEY_CURRENT_USER\Software\Blender Foundation
• HKEY_CURRENT_USER\Software\Microsoft\IntelliPoint\AppSpecific\blender.exe
• HKEY_CURRENT_USER\Software\Microsoft\IntelliType Pro\AppSpecific\blender.exe
• HKEY_LOCAL_MACHINE\Software\Microsoft\RADAR\HeapLeakDetection\DiagnosedApplications\blender.exe

Open regedit.exe in order to delete the following values:

• HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\MuiCache\C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\blender.exe.ApplicationCompany
• HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\MuiCache\C:\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\blender.exe.FriendlyAppName
• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\bam\State\UserSettings\S-1-5-18\\Device\HarddiskVolume2\Program Files\Blender Foundation\Blender\blender.exe
• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\bam\State\UserSettings\S-1-5-21-3484772539-224415570-648466648-1001\\Device\HarddiskVolume2\New folder\Blender\blender.exe
• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\bam\State\UserSettings\S-1-5-21-3484772539-224415570-648466648-1001\\Device\HarddiskVolume2\Program Files\blender 2.8\blender-2.82-b450ba84d9dd-windows64\blender.exe
• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\bam\State\UserSettings\S-1-5-21-3484772539-224415570-648466648-1001\\Device\HarddiskVolume2\Program Files\Blender Foundation\Blender 2.81\blender.exe
• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\bam\State\UserSettings\S-1-5-21-3484772539-224415570-648466648-1001\\Device\HarddiskVolume2\Program Files\Blender Foundation\Blender\blender.exe

A way to remove Blender from your PC with the help of Advanced Uninstaller PRO

Blender is an application offered by the software company Blender Foundation. Frequently, people decide to uninstall this program. Sometimes this can be easier said than done because performing this manually takes some knowledge regarding Windows program uninstallation. The best QUICK approach to uninstall Blender is to use Advanced Uninstaller PRO. Here are some detailed instructions about how to do this:





1. If you don't have Advanced Uninstaller PRO on your PC, install it. This is good because Advanced Uninstaller PRO is a very potent uninstaller and all around tool to optimize your PC.

DOWNLOAD NOW

• go to Download Link
• download the program by pressing the DOWNLOAD NOW button
• install Advanced Uninstaller PRO

2. Run Advanced Uninstaller PRO. It's recommended to take some time to admire the program's interface and wealth of tools available. Advanced Uninstaller PRO is a very good Windows optimizer.

3. Click on the General Tools category


4. Press the Uninstall Programs feature


5. A list of the applications existing on your computer will be made available to you

6. Navigate the list of applications until you locate Blender or simply click the Search field and type in "Blender". If it is installed on your PC the Blender application will be found very quickly. When you click Blender in the list of programs, some information regarding the application is made available to you:

• Star rating (in the left lower corner). This explains the opinion other users have regarding Blender, ranging from "Highly recommended" to "Very dangerous".
• Reviews by other users - Click on the Read reviews button.
• Details regarding the application you are about to remove, by pressing the Properties button.

7. Click the Uninstall button. A window asking you to confirm will show up. accept the uninstall by pressing Uninstall. Advanced Uninstaller PRO will remove Blender.


8. After uninstalling Blender, Advanced Uninstaller PRO will offer to run an additional cleanup. Click Next to proceed with the cleanup. All the items of Blender which have been left behind will be detected and you will be able to delete them. By uninstalling Blender with Advanced Uninstaller PRO, you can be sure that no registry items, files or folders are left behind on your system.

Your computer will remain clean, speedy and ready to serve you properly.

Disclaimer

This page is not a piece of advice to uninstall Blender by Blender Foundation from your computer, nor are we saying that Blender by Blender Foundation is not a good application. This page simply contains detailed info on how to uninstall Blender in case you decide this is what you want to do. Here you can find registry and disk entries that our application Advanced Uninstaller PRO stumbled upon and classified as "leftovers" on other users' computers.