GlassWire FAQ

Frequently asked questions.

Why is GlassWire flagging itself as malware under the VirusTotal column?

GlassWire itself may occasionally be flagged as malware by VirusTotal as a false positive. Feel free to post in our forum details about what engines are flagging us. We can then contact the antivirus engine who flagged us to get the false positive removed.

Why does Windows Defender sometimes show a GlassWire Firewall rule as a trojan?

The Microsoft Windows Defender software does not like to be blocked from updating, and if it is blocked by GlassWire at the same moment it is initiating a scan of your PC it can give off a trojan warning (with something like win32/BlockMsav.A!.reg). To avoid the problem you can unblock Windows Defender under GlassWire's Firewall tab.

Can I use GlassWire for free, and what are GlassWire's free features?

GlassWire 2.0 comes with a free 7 day trial so you can try out all its paid Basic, Pro, Elite features. After 7 days GlassWire will revert to its free version. The free version of GlassWire includes its extreme network monitoring functionality where you can see your live and past network activity in detail. You can also set Data Alerts to stay under your data limits, and scan your network related apps with VirusTotal. GlassWire's free version also allows you to monitor one PC remotely. The free version of GlassWire has no firewall functionality, and none of our security features are activated with the free version of GlassWire. Buy GlassWire now to upgrade to its paid version.

Why does my app still connect to the network while in “Ask to connect” mode?

Sometimes apps will briefly access the network with GlassWire for Windows if there was a previous “allow” rule added directly to the Microsoft Windows Firewall. We at GlassWire use the Windows Firewall API to allow or deny connections because it uses less CPU/Memory for your PC, and because it’s a transparent way for our users to see what we’re doing on their computers.

If you want to avoid any apps connecting to the network while in “Ask to connect” mode you can reinstall GlassWire choosing the GlassWire installer option to reset the Windows Firewall to its defaults. While doing so you can also choose to reset GlassWire’s settings to its defaults if you’d like to do that. Resetting GlassWire to its defaults will not cause your paid software to become deactivated.

Why does GlassWire for Android need the “phone” permission to make phone calls?

One of the first permissions GlassWire asks for is the “Phone” permission. Some people have asked us why GlassWire needs the ability to make phone calls, and of course GlassWire does not make phone calls with your phone. So why does GlassWire need the “phone” permission? The Android OS requires this “phone” permission for us to see mobile network data for your phone. Without this permission we are unable to see your phone’s mobile data usage.

Please note GlassWire cannot see your app/data usage even if we wanted to because our app does not access the network or transfer any data itself. Check GlassWire's privacy policy to see how we are an ad-free tracking-free app.

Why do I get an https “man in the middle” error when trying to activate?

GlassWire only uses https to activate so it's very unusual for it to fail. Https is used by almost all websites these days so it's rare for it to somehow not work. Do you use an unusual security app that analyzes https connections like Kaspersky? If so please disable it temporarily to activate, you can then re-enable it. Please also make sure GlassWire is not blocking itself with its own firewall, or that you're not using another firewall app that's blocking GlassWire from activating. Some corporate networks have a "man in the middle" system for security that decrypts https. If that applies to you please ask your IT admin to white list to solve the issue.

If you feel none of this applies to you, please consider uninstalling GlassWire, rebooting, then reinstalling our latest version as a "clean" option. You may also consider resetting the rules of the Windows Firewall by choosing "restore defaults" if you used a previous firewall application that could have left over blocking rules.

The popular Firefox browser can also have serious issues when https is broken. Firefox has made a detailed website with instructions on how to stop third party apps from intercepting secure https connections.

If you still can't activate after trying these suggestions please contact us.

Why can't GlassWire connect to its local server and why won't GlassWire's graph load?

GlassWire for Windows has a local Windows service that runs locally on your PC. This Windows service keeps track of your network activity for your PC or server. If that Windows service cannot start then GlassWire cannot graph your data usage.

Please note your graph data never leaves your PC, and we at GlassWire cannot ever access that data since it’s only stored locally on your own PC or server. Our privacy policy explains how we can't ever see your data.

If you are experiencing this problem first try rebooting your PC. If GlassWire still cannot run please uninstall GlassWire in add/remove programs, then reboot your PC (this is an important step in the process), then reinstall GlassWire while checking its “clean install” option in its installer. You can download our latest software from our download page.

If GlassWire’s graph will still not load please check to see if the following Windows services are running in the Windows task manager:

  • WlanSvc (WLan AutoConfig)
  • BFE (Base Filtering Engine)
  • EventLog (Windows Event Log)

These Windows services are usually on by default unless you disabled them. If you find these services are running but GlassWire will still not run please consider running Windows Update. With very old versions of Windows GlassWire may not run properly. After updating your device please once again try a clean install with GlassWire in the order listed above.

If you have tried all these different options and GlassWire’s graph will still not run, please contact us so we can help.

Who makes GlassWire?

GlassWire was created by Jon Hundley and a team of indie developers to help people secure their computers and phones. We wanted to create a tool that helped people easily see what their devices were doing in the background over the network. Check out this Fast Company article to learn more about the team behind GlassWire.

Where can I download GlassWire?

Please visit our download page and click the download button.

Do you have a Mac/Android/iPhone version?

Yes, please visit our Google Play page for our GlassWire Data Usage Security app. We are continuing to work on Mac and iOS versions of our software. Thanks for your patience.

How can I buy GlassWire?

Visit our order page and learn about the different versions of GlassWire and purchase the software.

How can I activate GlassWire's paid software version?

Go to the top left GlassWire menu and choose "Activate GlassWire" then insert your serial number you received after purchasing the software. 

How can I cancel my GlassWire subscription?

For GlassWire Android go to Google Play and tap the top left three line menu and choose "subscriptions". Then tap on the subscription you wish to cancel. For desktop software please find your original order email and there is an instant cancellation button inside the email. If you cannot find this you can contact our billing company Cleverbridge to cancel.

What does it mean if GlassWire alerted me to a "Suspicious host connection"?

Don't panic. It's possible to connect to a suspicious host or domain with no consequences. If GlassWire alerted you to a suspicious host connection there are several things you can do. First scan the item that connected to the suspicious host for viruses by going to the "alerts" tab and finding the suspicious host alert. Click the icon of the application that contacted the suspicious host and then click "virus scan" inside that window. Next try a full system antivirus scan with your up to date antivirus software to see if it picks up anything suspicious. If everything looks OK with the two scans you can visit a website like Site Advisor or Web of Trust and type in the suspicious domain to see if you can find out more data about why it may be suspicious. Go to the GlassWire Firewall tab and consider blocking the application temporarily while you do more research. If you're still feeling nervous post screenshots to our forum and get feedback from other GlassWire users.

Why didn't GlassWire show one of my applications on the graph or as a "new" connection?

To catch all network connections the GlassWire installer recommends you reboot after installation. However we do realize most people hate rebooting so we don't force you to do so.

What is gwinstst.exe?

On install GlassWire let's us know how many installs of our software we are getting by briefly letting know about the installation. We are looking at more transparent ways to track installs in the future. We would feel very frustrated if we were unable to track our installs, it's kind of like having a web page and not knowing if anyone is visiting it.

Why does GlassWire connect to

GlassWire is checking for software updates and suspicious host updates. If you block GlassWire from accessing the network then you will not know about new versions of our software that contain security and bug fixes.

Can I use GlassWire to monitor remote computers and servers?

Yes. Check out this section of our user guide for more information.

Why does GlassWire's "block all" mode for Windows allow some network activity?

We used to make our "block all" firewall mode block absolutely all network activity. Then Microsoft's Windows Defender software began to give a severe false positive antivirus alert when we'd block parts of their security software. This severe false positive would cause you to have to restart your PC, and would reset our firewall rules. Instead of forcing everyone to restart (and since our rules would be reset anyway) we chose to white list some parts of Microsoft's Windows Defender so the false positive would no longer occur.

Can I use GlassWire as my only antivirus?

No. GlassWire works in addition to your antivirus as added protection but we do not recommend it as a stand-alone way to protect your computer.

Do you monitor my network activity?

No. Your network activity is stored on your computer and only you can access it. If you don’t want to keep your network activity you can also go to the top left "GlassWire" menu and choose "Incognito" or go to your settings to delete all your network history any time. One of the useful features of GlassWire is the ability to go back and time and see your network activity so we don’t recommend always using Incognito mode. Check GlassWire's privacy policy to see how we are an ad-free tracking-free app.

Is it possible to disable the desktop alerts?

Yes. Go to the top left GlassWire menu and choose "snooze alerts" to disable them for 24 hours or go to the settings under "Client" to disable them permanently.

Can GlassWire work with apps on a network share?

Yes. To make GlassWire work with network shares add a new user to a local PC and the same user with the same password to a remote machine.
Specify the newly added user account on the “Log On” tab of GlassWire’s service settings:

Restart the GlassWire service.
Now the service will be able to authorize and get the details of the app that is running on a remote PC.

Another option is adding the new user to a domain (if it’s configured) on the step 1.

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