WIN7 System Browser Install extension plugin failed to do

method One:

1, press Win+r key, open run, enter sysdm.cpl, click OK;

2, in the Open System Properties page, switch to the "Advanced" item, click the "Environment variable" button below;

3, in the System variable box to find and double-click the hit "TEMP", the variable value modified to "%systemroot%temp" click OK, and then click OK.

Method Two: Security sandbox causes

1, right click on the desktop browser icon, select "Properties";

2, in the Open property page, switch to the "shortcut" item, the contents of the target bar after the "--no-sandbox", click OK, you can install the expansion.

Method Three:

1, due to the installation of the file encryption software reasons, resulting in the browser can not create subdirectories in the temporary directory;

2, the corresponding encryption software set to the Trust directory, or uninstall encryption software can install extension