I have error instaling the googlevoiceandvideosetup.
Error 1603: Fatal error during installation.
Error 1603: Fatal error during installation.
Όλες οι απαντήσεις (2)
This has nothing to do with Firefox, you should contact Google's support for that.
Also see: https://support.google.com/chat/answer/answer.py?answer=162044
This is not a Firefox issue. As said above, contact the Google support team for more support.
You can read more about this error from the Microsoft Support website.