diff --git a/libsignal-service/src/main/java/org/whispersystems/signalservice/internal/websocket/LibSignalNetworkExtensions.kt b/libsignal-service/src/main/java/org/whispersystems/signalservice/internal/websocket/LibSignalNetworkExtensions.kt
index 26210afd73..7ddd6bc949 100644
--- a/libsignal-service/src/main/java/org/whispersystems/signalservice/internal/websocket/LibSignalNetworkExtensions.kt
+++ b/libsignal-service/src/main/java/org/whispersystems/signalservice/internal/websocket/LibSignalNetworkExtensions.kt
@@ -6,9 +6,13 @@
 
 package org.whispersystems.signalservice.internal.websocket
 
+import org.signal.core.util.logging.Log
 import org.signal.core.util.orNull
 import org.signal.libsignal.net.Network
 import org.whispersystems.signalservice.internal.configuration.SignalServiceConfiguration
+import java.io.IOException
+
+private const val TAG = "LibSignalNetworkExtensions"
 
 /**
  * Helper method to apply settings from the SignalServiceConfiguration.
@@ -19,7 +23,12 @@ fun Network.applyConfiguration(config: SignalServiceConfiguration) {
   if (proxy == null) {
     this.clearProxy()
   } else {
-    this.setProxy(proxy.host, proxy.port)
+    try {
+      this.setProxy(proxy.host, proxy.port)
+    } catch (e: IOException) {
+      Log.e(TAG, "Invalid proxy configuration set! Failing connections until changed.")
+      this.setInvalidProxy()
+    }
   }
 
   this.setCensorshipCircumventionEnabled(config.censored)