diff --git a/platformio/commands/boards.py b/platformio/commands/boards.py
index 572e39a3..2da6cdf6 100644
--- a/platformio/commands/boards.py
+++ b/platformio/commands/boards.py
@@ -16,7 +16,7 @@ import json
 
 import click
 
-from platformio.exception import APIRequestError
+from platformio.exception import APIRequestError, InternetIsOffline
 from platformio.managers.platform import PlatformManager
 
 
@@ -92,10 +92,13 @@ def _get_boards(installed=False):
     boards = PlatformManager().get_installed_boards()
     if not installed:
         know_boards = ["%s:%s" % (b['platform'], b['id']) for b in boards]
-        for board in PlatformManager().get_registered_boards():
-            key = "%s:%s" % (board['platform'], board['id'])
-            if key not in know_boards:
-                boards.append(board)
+        try:
+            for board in PlatformManager().get_registered_boards():
+                key = "%s:%s" % (board['platform'], board['id'])
+                if key not in know_boards:
+                    boards.append(board)
+        except InternetIsOffline:
+            pass
     return boards
 
 
diff --git a/platformio/exception.py b/platformio/exception.py
index cafd084b..c3cf76f5 100644
--- a/platformio/exception.py
+++ b/platformio/exception.py
@@ -151,6 +151,11 @@ class APIRequestError(PlatformioException):
     MESSAGE = "[API] {0}"
 
 
+class InternetIsOffline(PlatformioException):
+
+    MESSAGE = "You are not connected to the Internet"
+
+
 class LibNotFound(PlatformioException):
 
     MESSAGE = "Library `{0}` has not been found in PlatformIO Registry.\n"\
diff --git a/platformio/managers/lib.py b/platformio/managers/lib.py
index c4bedced..e3edaca0 100644
--- a/platformio/managers/lib.py
+++ b/platformio/managers/lib.py
@@ -209,13 +209,24 @@ class LibraryManager(BasePkgManager):
                 silent=False,
                 trigger_event=True,
                 interactive=False):
+        already_installed = False
         _name, _requirements, _url = self.parse_pkg_name(name, requirements)
-        if not _url:
-            _name = "id=%d" % self._get_pkg_id_by_name(
-                _name, _requirements, silent=silent, interactive=interactive)
-        already_installed = self.get_package(_name, _requirements, _url)
-        pkg_dir = BasePkgManager.install(self, _name if not _url else name,
-                                         _requirements, silent, trigger_event)
+
+        try:
+            if not _url:
+                _name = "id=%d" % self._get_pkg_id_by_name(
+                    _name,
+                    _requirements,
+                    silent=silent,
+                    interactive=interactive)
+            already_installed = self.get_package(_name, _requirements, _url)
+            pkg_dir = BasePkgManager.install(
+                self, _name
+                if not _url else name, _requirements, silent, trigger_event)
+        except exception.InternetIsOffline as e:
+            if not silent:
+                click.secho(str(e), fg="yellow")
+            return
 
         if already_installed:
             return
diff --git a/platformio/managers/package.py b/platformio/managers/package.py
index 22ea8e25..e1fcae32 100644
--- a/platformio/managers/package.py
+++ b/platformio/managers/package.py
@@ -542,7 +542,9 @@ class BasePkgManager(PkgRepoMixin, PkgInstallerMixin):
             except exception.PlatformioException:
                 pass
             if not latest_version:
-                click.echo("[%s]" % (click.style("Unknown", fg="yellow")))
+                click.echo("[%s]" % (click.style(
+                    "Off-line" if not util.internet_on() else "Unknown",
+                    fg="yellow")))
                 return
 
             up_to_date = False
diff --git a/platformio/telemetry.py b/platformio/telemetry.py
index 68a1e517..5f045951 100644
--- a/platformio/telemetry.py
+++ b/platformio/telemetry.py
@@ -258,9 +258,11 @@ def on_event(category, action, label=None, value=None, screen_name=None):
 
 
 def on_exception(e):
-    if any([isinstance(e, cls)
-            for cls in (IOError, exception.AbortedByUser,
-                        exception.NotGlobalLibDir)]):
+    skip = any(
+        [isinstance(e, cls)
+         for cls in (IOError, exception.AbortedByUser,
+                     exception.NotGlobalLibDir, exception.InternetIsOffline)])
+    if skip:
         return
     is_crash = any([
         not isinstance(e, exception.PlatformioException),
diff --git a/platformio/util.py b/platformio/util.py
index e9f21a0f..e0db6b2b 100644
--- a/platformio/util.py
+++ b/platformio/util.py
@@ -17,6 +17,7 @@ import functools
 import json
 import os
 import re
+import socket
 import stat
 import subprocess
 import sys
@@ -452,6 +453,8 @@ def get_api_result(path, params=None, data=None, cache_valid=None):
             return result
         except (requests.exceptions.ConnectionError,
                 requests.exceptions.Timeout) as e:
+            if not internet_on():
+                raise exception.InternetIsOffline()
             from platformio.maintenance import in_silence
             total += 1
             if not in_silence():
@@ -466,6 +469,17 @@ def get_api_result(path, params=None, data=None, cache_valid=None):
         "Please try later.")
 
 
+def internet_on(timeout=3):
+    host = "8.8.8.8"
+    port = 53
+    try:
+        socket.setdefaulttimeout(timeout)
+        socket.socket(socket.AF_INET, socket.SOCK_STREAM).connect((host, port))
+        return True
+    except:  # pylint: disable=bare-except
+        return False
+
+
 def get_pythonexe_path():
     return os.environ.get("PYTHONEXEPATH", normpath(sys.executable))