Your firewall and antivirus can also interfere with the software and block it from accessing the Internet.

If Viber keeps crashing while trying to open it, there might be problems with your cache, so you’ll need to reset the app. Sometimes, a lack of certain privileges will prevent you from using the software. There are multiple causes for this issue, and in most cases, there’s a glitch with the software. Many other cross-platform chat apps suffer from similar issues, but luckily, there is a way to fix them, and in today’s guide, we’re going to show you how to do it.

That’s not an entirely unusual error for UWP apps. However, some users can’t always open the Viber app due to This app can’t open error. Viber is a popular instant messaging app available on multiple platforms, but many reported that Viber is not opening on Windows 10/11.

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