Like any PC, once in a while your WorkSpace need to be restarted to refresh it.
Please follow below steps Workspace. There’s 2 ways to restart WorkSpace:
Option 1 :
Go to Start > Select power button > Restart
Option 2 :
Step 1 - Go to the Left top menu
Step 2 - Select Amazon WorkSpaces
Step 3 - Select Restart Workspace
Step 4 - Wait around 15 min and try again