[pkg] abort install if we running an old version0.21.2

stop if:

- bitmask is running (we don't want to mess with the helper if the app
  is running)
- we cannot stop the service for some reason.

powershell gives more flexibility to stop services, but Remove-Service
is not present in PS < 6, so we try to remove the service from the
post-install too (the golang helper will complain about an eventlog
registry key).

this could probably be improved in the helper, but we'll be moving to
the official openvpnserv2 service for 0.21.4. we might want to revisit
the current helper for the firewall/killswitch.

1 files changed, 16 insertions, 0 deletions

diff --git a/docs/debug.rst b/docs/debug.rst
index 76c9d1f..a154ab0 100644
--- a/docs/debug.rst
+++ b/docs/debug.rst
@@ -57,3 +57,19 @@ Make sure that "pgrep bitmask-helper" does not return any pid.
 
 Now you can move /Applications/RiseupVPN.app to the Trash, and launch a
 recent installer to get a clean install.
+
+Windows
+-------
+In Windows you can use PowerShell to see if there's an old service Running (it
+can be from RiseupVPN, CalyxVPN, LibraryVPN etc...).
+
+.. code:: powershell
+
+  PS C:\Users\admin> Get-Service bitmask-helper-v2
+
+You can also stop it (needs admin)
+
+.. code:: powershell
+
+  PS C:\Users\admin> Stop-Service bitmask-helper-v2
+