exile360

Greetings,
I'm sorry you're having trouble activating the software.  We should be able to assist you in getting it up and running on your third system.
First, while it may seem obvious, I know it threw me for a loop at first having used the software myself for many years, but please make certain you enter the correct information in each field.  Previously the ID field was on the top and the Key field was on the bottom, however in Malwarebytes 3, they are reversed (this is because newer licenses only use a Key, and not an ID so the ID field gets added to the UI when you select that option below the existing Key input field), so please make sure that you entered the longer Key string on top and the shorter ID string on the bottom.
Also make certain that you enter all of the characters, including the - hyphens/dashes and if possible, copy/paste the information from your confirmation email if you purchased the license online, and if activating a boxed product/retail version, be sure you enter the letters and numbers accurately as it is easy to confuse the letter O with the number 0 or the letter l with the number 1 etc.
If the issue is that it states that The usage level has exceeded the maximum installs allowed. then you should contact Support directly via one of the options on that linked page and they will assist you in getting the issue resolved.
Please let me know if you were able to resolve the problem or not and if there is anything else we might assist you with.
Thanks

In all likelihood it would fail to activate the license on the second system and would display an error message stating that The usage level has exceeded the maximum installs allowed.

Greetings and welcome
It sounds like perhaps Malwarebytes may be blocking something on the website that is coming from a different source, such as an advertisement on the webpage (this would explain why excluding the website failed to prevent the blocks from continuing, because the actual source of the block may have been from a different site).
Also, with regards to Web Protection not staying on, please make certain you are running the latest version of Malwarebytes, version 3.4.4, as there was a known issue with the previous release which would sometimes cause certain protection components to fail to start/stay on, including Web Protection.
For the first issue, it would be helpful if you could post some of your protection log entries from the block events (you can find them under the Reports tab, just double-click one of the block entries to see the details and then use the Export button to copy it to the clipboard and paste it into your next reply or export it to a text file and attach that to your next reply).
As for getting the latest version installed, you can go to Settings>Application and click the Install Application Updates button and it should offer to download and install the latest version, assuming you are not already running that version (3.4.4 as I mentioned above).
Please let us know how it goes and if the issue with Web Protection failing continues even with version 3.4.4 installed and provide one or two of the most recent block entries for that website from the Reports tab (you can visit it and it should create new ones and you can sort the list by date by clicking on the Date and Time column twice to put it in order of most recent events at the top of the list).

Greetings,
It sounds like what happened on your wife's laptop is something that several users have experienced recently where the recent update for version 3.4.4 of Malwarebytes attempted to install but during the process, after removing the older version, failed to install the new version resulting in the system having no Malwarebytes installation.
As for performing a clean install, you don't need to deactivate the license if it's going to be reinstalled on the same system.  If you do wish to perform a clean install then we recommend using the Malwarebytes utility designed for this purpose, MB-Clean.exe.  If you just want to go ahead and install the latest version of Malwarebytes and forego the clean install, you may download it from here.
Please let us know if you have any problems getting the software installed and up and running again, but it should install OK now.
As for a third party firewall, these days most stand by the effectiveness of the built in Windows Firewall which has evolved dramatically since the days of Windows XP and has become quite robust.  The only recommendation I might make is if you want outbound internet access control for programs as well as inbound blocking to prevent attacks from the outside (the latter of which the Windows Firewall is fully capable of on its own), then you might consider one of the many solutions available which use the WFP (Windows Filtering Platform); the technology built into the network stack which forms the core of the modern Windows Firewall, several of which are available for free such as the following examples (note: not all of them display a prompt/notification when a program wants internet access, so if that is something you want, make sure to read up on each firewall's features as they are quite varied with a lot of different options and functionality depending on what you're looking for):
Windows 10 Firewall Control (they have a free version there which is completely adequate in my opinion and it's what I myself use and have used for years, ever since the days of Windows Vista) Windows Firewall Notifier TinyWall Simplewall Free Firewall

Greetings
Ransomware, like all malware, changes constantly in an attempt to evade detection and to infect as many systems as possible so there are no guarantees, however, given the current trend of a heavy reliance on exploits to infect systems and the fact that ransomware's behavior (including the behavior of Thanatos) is fairly consistent, the anti-exploit and anti-ransomware components in Malwarebytes Premium,  both of which do not rely on signatures like traditional anti-malware and antivirus solutions, but instead each use behavior based algorithms and signature-less detection capabilities to stop attacks before an infection can take hold, I would be confident that your system is safe from this threat.
In addition, you can take further measures to protect yourself by keeping current backups of all of your important files and documents on a separate storage device such as an external drive or a cloud backup service (and if you do use an external drive, such as a USB hard drive or flash drive, do NOT leave it plugged into the computer when you aren't performing a backup of your files, otherwise it could fall prey to infection should your system be infiltrated by ransomware or any other threat that modifies files).  Keeping good backups is a good idea anyway, not just because of the possibility of infection by malware, but also in case your system is stolen, has a fatal system crash or hardware failure that results in loss of data (drives fail all the time, and if you have files that are important to you, it's always a good idea to keep backups as insurance against the worst case scenario).
I hope that helps set your mind at ease.  If there's anything else we can answer for you or anything that we can assist you with please don't hesitate the let us know.
Thanks  

Greetings
Most likely there's some toolbar or plugin that has been installed that is trying to connect to those websites and that's what's causing the blocks to occur.
So first, I'd recommend opening Malwarebytes and navigating to Settings>Protection and enabling Scan for rootkits and make sure that Always detect PUPs (recommended) is the option selected for Potentially Unwanted Programs (PUPs).
Next, go back to the Dashboard tab and click Scan Now or you may use the Scan tab, select Threat Scan and then click Start Scan.  Once the scan completes, have Malwarebytes remove any detected items and reboot if required to complete threat removal.
Once that's done, if the issue persists or if nothing was detected by the scan, go ahead and download and run ADWCleaner from here and scan with it and allow it to remove what it finds.
If the issue still persists, go ahead and follow the instructions in this post and post the requested information along with the log from ADWCleaner and your most recent Malwarebytes scan in a new topic in the Malware Removal for Windows area by clicking here and one of our malware removal specialists will assist you in checking and cleaning your system of any threats and unwanted applications.

I realize this is a lot of info, so the TL;DR version is: technically Malwarebytes doesn't protect against network based attacks like the SMB exploit used to spread the WannaCry ransomware, however with its 6+ layers of defense, I would personally feel secure continuing to use SMB as long as you keep your OS patched and your security software (like Malwarebytes) up to date.
 
Now for the long version:
Actually, while Malwarebytes did detect/prevent WannaCry at hour 0 with its signature-less protection (the anti-exploit component), it didn't actually do so via the SMB attack/backdoor (known as EternalBlue) because the anti-exploit component in Malwarebytes is not currently capable of detecting/blocking network protocol based exploits like EternalBlue; it does however include an anti-ransomware component which did detect and stop the primary attack, the actual ransomware that would attempt to encrypt users' files.  I also believe that the anti-exploit component did detect the downloader/dropper component of the worm, which would prevent the ransomware from downloading/executing in the first place.
As for whether or not you are safe to continue using SMB 1, 2 or 3, that honestly all depends on what vulnerabilities might still lurk in those protocols that we don't know about yet (assuming there are any) that Microsoft has not yet patched (MS had actually released a patch for the EternalBlue exploit/vulnerability a full month before the WannaCry/WannaCrypt0r attack began, so if users had actually had their Windows up to date, they wouldn't have been infected with the exception of XP of course, which MS no longer supported/was no longer patching at the time, though they did publish a patch for it after the WannaCry attack event).
Now, with all of that said, there are always risks with any kind of communication protocols (even the widely praised HTTPS) because in theory, any form of encryption or secure communication protocol may be broken eventually so the fewer that are in use/active on a system, the smaller the attack surface the better.
I personally had already completely disabled/removed all SMB, Remote Desktop (RDP), File and Printer Sharing and several other protocols and Windows components that I don't use prior to the WannaCry event as part of my standard system configuration procedures that I perform every time I install Windows or setup a new system.  Now that does not mean that I advise everyone else to do so, however if they aren't using them then I do believe that they should disable/remove them.  In your case, you still have use for them so if I were you and I desired that functionality, I would leave the protocol enabled and just make sure to keep my operating system and network card/chip drivers up to date (because contrary to what you may hear from some tech gurus, updating drivers can be important even if the driver you have seems to be working OK, though I still side with them against the use of so-called driver updater software and believe one should only download new drivers from the actual hardware manufacturer of the device being updated having first-hand experience with just how wrong those driver updater programs can be and how they can install the wrong drivers and cause more problems than they fix), and of course keep using solid security software like Malwarebytes (and keep it up to date too ) to help keep the system safe from malware, PUPs, exploits, ransomware, scams, worms, Trojans, rootkits, bots and other web based threats.

Greetings,
It appears as though there is a problem with Windows Management Instrumentation (WMI) on your system, and that's likely why Malwarebytes isn't working properly.  WMI is required for many programs and core operating system functions in Windows so it is important that it functions properly.
Please do the following:
Tweaking.com Windows Repair All-in-One

Download Tweaking.com Windows Repair from here and install it or if you would prefer, you may instead download and extract the portable version from here Once installed or extracted, launch Repair_Windows.exe Click on the Repairs - Main tab Click on the Open Repairs button Once it displays the list of repairs, click the checkbox next to All Repairs so that everything listed is UNCHECKED Now, click the checkbox next to Repair WMI so that it is checked Click on the Start Repairs button at the bottom Once it completes, allow it to restart your system

Once that's done, see if Malwarebytes now works properly.
Please let us know how it goes.

Greetings,
I'm sorry you're having problems with getting Malwarebytes 3 to activate with your license key.  The quickest way to get help with this issue would probably be to contact Support directly via one of the options on this page (live chat should be available currently, which would probably be the most expedient).

The issue now appears to be fixed (current database: 1.0.4342)

Greetings,
The latest version of Malwarebytes is 3.4.4.  Please try installing the latest version from here to see if that corrects the issue.  There's no need to uninstall your current version, just install the new one over the top of your current installation and reboot if prompted to complete the installation process.  Once that's done, check to see how it is working and if still having issues please let us know and we'll continue to work on the problem to try to diagnose and fix it.
Thanks

Yes, if registered with Security Center/Action Center in Windows it is (and does) required to set that key for compatibility with the update from Microsoft.  The latest versions of Malwarebytes 3 do set this key accordingly so that the update will be offered/installed by Windows Update/Microsoft Update.