The end user will see an error message and be provided a link to download the missing dependency.
%Enable loading of per user extensions
/Enable automatic detection of available updates
9&
Enable access to extensions on the Visual Studio Gallery
=You must restart {0} in order for the changes to take effect.
ACannot search for online extensions because an error occurred while trying to contact the server.
ETo enable online functionality, on the Extension Manager page in the Options dialog box, check '{0}'.
Enable anyway
JThe extension could not be installed because the following error occurred:
T&
Load per user extensions when running as administrator (Restart of {0} is required)
VCannot check for updates because an error occurred while trying to contact the server.
YA connection to the server could not be established because the following error occurred:
_Restart Now