Change the border width in Windows 8

The border size and padding could be customized using "Advanced appearance settings" option present in Desktop Personalization window in Windows Vista and Windows 7 but Microsoft removed this option from Windows 8.

However it can be done as follows:-

1. Press "WIN+R" key combination to launch RUN dialog box then type regedit and press Enter. It'll openRegistry Editor and go to following key:

HKEY_CURRENT_USER\Control Panel\Desktop\WindowMetrics

2. In right-side pane, look for following 2 Strings:

• BorderWidth
• PaddedBorderWidth

By default, BorderWidth string is set to -15 and PaddedBorderWidth is set to -60.

3. Right click and choose Modify to change the values of  BorderWidth and PaddedBorderWidth.

For thinner border set the values of both to 0.

To restore them, set their default value.

4. Now close the Registry Editor. Logoff your account and logon to apply the changes.