Why Does Logitech Flow Not Work?

Sup folks! Let me start off by saying that I know how annoying it is when Logitech Flow doesn’t work properly. In short, Flow stops working when your devices aren’t officially supported, not paired correctly, blocked by your firewall, or not connected to the same Wi-Fi network. The good news is that this can usually be fixed pretty easily by troubleshooting your setup.

I’ll go through the common issues step-by-step to get your Flow working again. Stick with me and you’ll be switching between your computers effortlessly in no time!

You are Not Using Logitech Flow Supported Devices

One of the most common reasons for Logitech Flow not working is using mouse and keyboard models that are not compatible with the Flow feature. Logitech Flow requires specific Logitech devices to work.

Reason

Logitech Flow relies on advanced connectivity protocols that are only available in certain modern Logitech mice and keyboards. Older Logitech devices lack the hardware and firmware support required for Flow.

Similarly, non-Logitech accessories are not designed to work with Flow, even if they can pair with a Unifying receiver. Flow requires mouse and keyboard models that are explicitly supported by Logitech Flow software.

According to Logitech, only the following devices are compatible with Flow:

• Mice: MX Master 2S, MX Anywhere 2S, MX Master 3, MX Anywhere 3
• Keyboards: K780, K850, K860, MX Keys, MX Keys Mini

Using any other Logitech or non-Logitech devices will lead to Flow not functioning properly. The Flow pairing and transition features rely on proprietary protocols and hardware capabilities present only in the above Flow-supported devices.

Solution 

If you are facing issues with Logitech Flow, first check whether your accessories are supported by Flow models as per Logitech’s compatibility list.

To use Logitech Flow seamlessly between multiple computers, you must own compatible Flow mice and keyboards. If your devices are not natively supported, consider upgrading to Logitech’s newer Flow-enabled mice and keyboards.

Popular compatible options include the MX Master 3 mouse and MX Keys keyboard which offer flawless Flow control and top-notch wireless performance.

Using Different Logitech Accounts on Each Device

Logitech Flow requires that your mouse and keyboard are linked to the same Logitech account across all paired computers. Failing to do this can disrupt Flow functionality.

Reason 

The advanced Flow transition feature relies on device synchronization via your Logitech account. This allows the keyboard and mouse profiles, settings and paired devices to be shared across your computers.

If you use different accounts on each system, the devices will fail to synchronize properly. There will be an account mismatch which prevents seamless Flow transitions between the computers.

Having mismatched or missing Logitech accounts thus breaks Flow connectivity and prevents fluid switching between PCs. All systems must share common account credentials for the feature to work correctly.

Solution

Log in using the same Logitech account credentials when setting up Flow on each computer. You can use the Logitech ID option during Flow software installation or account creation.

Alternatively, open Flow on all PCs and use the Log In option on each to sign in with your existing Logitech account. Use the same email address and password when logging in to link the devices properly.

With consistent accounts across devices, your Logitech options, mice/keyboard settings and paired computers will synchronize correctly to enable seamless Flow control between systems.

Firewall Blocking TDP(443) and UCP(59867/59868) Connections

Aggressive firewalls blocking connectivity for certain protocols and ports can also disrupt Logitech Flow functionality and cause it to fail.

Reason 

For Logitech Flow to work reliably between computers, certain connectivity requirements must be met:

• TDP traffic on TCP port 443 for account and settings sync must be allowed.
• UCP traffic on UDP ports 59867 and 59868 for device pairing and transitions should be permitted.

Overly restrictive firewalls that completely block the above critical protocols and ports will break Flow connectivity. The device pairing, account sync, and transitions rely on TDP and UCP traffic being allowed.

Blocking those connections essentially isolates the devices and computers, preventing Flow from working properly. This manifests as pairing failures, profile sync issues, and lack of transition control between PCs.

Solution 

To resolve this, you will need to reconfigure your firewalls and security software to allow TDP on TCP port 443 and UCP on UDP ports 59868 and 59867 for local network traffic.

Temporarily disabling the firewall and retesting Flow can help determine if this is the cause of problems before tweaking firewall settings.

For Windows Firewall, 

Step 1. Navigate to Firewall Settings

Press the Windows key and type Windows Security.

Click on Windows Security in the search results.

Choose Firewall & network protection.

Step 2. Allow Logitech Option+ App:

First, click on Allow an app through firewall.

Then, click on Change Settings.

After that, locate LogiOptionsMgr.EX or Logi Options+ Agent in the list.

Finally, check the boxes for both Private and Public networks to enable access.

Step 3. Repeat for Multiple Computers (If Applicable):

If using Logitech Flow with multiple Windows computers, repeat steps 1-2 on each computer.

Step 4. Restart for Changes to Take Effect

Restart both computers for the new firewall settings to apply.

Your Devices Are Not On the Same Local Wireless Network 

Logitech Flow requires that all your paired computers are on the same local Wi-Fi network. Being on different networks will prevent Flow from functioning properly.

Reason 

The underlying communication protocols for Flow only work over the local subnet between devices connected to the same Wi-Fi router.

Flow transitions and device syncing cannot happen over the public internet or different remote networks. This limitation is due to the security and complexity of routing traffic between disparate networks.

If your computers are on different wireless networks – for example, laptop on home Wi-Fi and desktop on office Wi-Fi – Flow will simply fail to transition between the devices across networks.

Solution 

Ideally, you should connect all computers to the same wireless network to fully utilize Flow. For home use, configure all PCs to join the same home Wi-Fi.

In office environments, connect the computers to the same office wireless network for inter-device Flow to work properly. This routes all traffic through the same local network.

Alternatively, you can use a wired Ethernet connection to join computers from different wireless networks on the same physical subnet.

For example, run Ethernet between your work and home PCs to bridge the office and home networks together, allowing Flow to work reliably.

Incompatible Operating Systems of Using Devices

Logitech Flow is only designed to work on Windows 10 or later and macOS 10.15 Catalina or above. Using older unsupported OS can lead to Flow compatibility issues.

Reason 

To use Flow functionality, specific OS capabilities and frameworks are required. Logitech Flow relies on newer OS-level components for device pairing, transitions and account syncing.

Older operating systems like Windows 7 or macOS High Sierra lack some of these core features needed for Logitech Flow to operate properly. Flow software cannot be installed and is known to malfunction on incompatible OS.

Hence, checking your Windows and macOS versions is crucial. If you are on older unsupported operating systems, it will directly lead to Flow failing to work as expected.

Solution 

Ideally, upgrade your operating systems to the latest Windows 10 and macOS versions to use Logitech Flow without any hiccups. For Windows, it needs to be 10+ and for macOS, the version needs to be 10.15 or higher.

The newest OS builds have all the prerequisites to run Flow flawlessly between computers and across OS.

If upgrading OS is not practical currently, you can try using Flow on only the computers running newer supported OS like Windows 10 and macOS Catalina at a minimum. This allows partial Flow functionality between compatible devices.

Check Logitech’s OS compatibility list before troubleshooting further and consider upgrading to the recommended Windows 10 and macOS versions for the best Flow experience.

Using Backdated Logitech Option+ Software

While you are using software, it’s mandatory to be up to date and the Logitech Option+ isn’t any different.

Reason

Logitech periodically releases updates to the Option+ software to fix bugs and improve performance. Older versions may have bugs that are fixed in more recent updates. These bugs could directly cause problems with Logitech Flow connectivity or functionality.

So, in this case, you can try to solve the problem by updating the option+ software!

Solution 

To resolve connectivity problems, first check if any app updates are available. Open the Logitech Option+ app on your computer, click the Settings icon, and select Check for updates. Installing the latest version can often fix problems caused by bugs in older releases. Keeping software up-to-date is an easy first step toward getting Logitech Flow working smoothly again.

Lastly

There ya have it friends! Just double-check your device compatibility, pairing, firewall settings, and network connections. 99% of the time, one of those is the culprit behind Flow problems. Tackle each solution and you’ll get Flow functioning smoothly. Thanks for tuning in and good luck getting that sweet multi-computer control back! Let me know if you have any other Flow issues.