Change Guest Account Picture in Windows 8.1?

Question

Is there a way to change the Windows 8.1 Guest Account Picture and how ?

Answer 1

Try this answer (from http://d4rkcell.com/archives/1410) :

Some guides I read online talk about a folder at C:\ProgramData\Microsoft\Default Account Pictures. This directory didn’t exist on my version of Windows 8.1 enterprise so use the folder in step 4 below instead.

1. Create your image in paint.net as 448 x 448 save it as a BMP file and again as a PNG file, name the files user.bmp and user.png.

2. Resize the image to 200×200 and save as User-200.png

3. Resize the image to 40×40 and save as user-40.png

4. Copy these files to C:\ProgramData\Microsoft\User Account Pictures

5. If you want to manage the guest account pictures replace guest.png and guest.bmp with the 448 x 448 copies of your image named appropriately.

6. Delete any .dat files in the folder and restart.

The default is now this image. Handy if you want a corporate logo. The various sizes make this image visible in various places such as the top right corner (smaller image), the login screen etc.