Fix 1: Go Through iMessage settingsĮnsure you have not disabled iMessage on the Mac. You can force quit the app by opening the Apple Menu, and then selecting and exploring the 'Force Quit' option. You can quickly fix a frozen or unresponsive app by forcing it to quit if the issue isn’t related to compatibility or disk permission issues. If all is well with the connection, you can then go ahead and apply each of the following solutions one by one to determine the suitable one to handle the iMessage bug issue: Fixing iMessage Bug on macOS 10.14 Mojaveīefore trying any of these potential fixes, the first step is to check your network condition. In the next section, we will give you tips on how to fix the 'iMessage not working' problem on macOS 10.14. It could also make messages show up on your device without being notified so you won’t be able to see/hear it only for the notification to pop up hours later. This bug could result in extreme delays in messages being received on your Mac. What is the Inconvenience Caused by the Bug IssueĪs mentioned earlier in the introduction, this problem is often caused by a recent software upgrade.