# Refresh Environments

To save time while switching environments, taskers cache up to eight environments, which makes switching instantaneous. The cached environments can be refreshed either through the GUI by clicking Project > Taskers control > Refresh environments, or by entering:
``% vovtaskermgr refresh``
Refreshing is necessary if you modify an environment after the taskers have cached it. Restarting the taskers achieves the same result at a slightly higher cost.
CAUTION:
On Windows NT, refresh does not work. You must restart the taskers instead.