Razer Synapse 4

Hi everyone,I recently contacted Razer Support regarding an issue with Razer Synapse 4 crashing a few seconds after launch (case handled by Rex from support). I was informed that the team is aware of the problem and currently working on a fix that will be released in an upcoming update.I just wanted to ask if anyone else here is experiencing the same issue, and if there are any updates or temporary workarounds that have helped.Thanks in advance for any info or suggestions!

I'm using a Razer Blade 18 2025 laptop. How do I set Razer Synapse 4 to not overwrite the icm color profile I added in Windows 11? I set the color profile via color management in Windows 11, save it as the default profile. After restarting, whenever Synapse 4 starts, it overwrites my profile with the default profile in Synapse 4. It worked fine for me on the previous installation, but I don't know why it's not working for me now? I noticed that I previously had a custom color profile filled in directly in Synapse 4, but now there is an empty field, see the picture. I'm using a graphics card in optimus mode. Can you please help me? Thank you! 

I’m here simply to advocate for Linux support. I have 3 Razer devices, headphones, keyboard and mouse and they struggle to work with Linux. Us Linux users should not have to settle for third part software like OpenRazer. While I respect their work it should not be on them to have to make these tools. We paid money for our devices, we expect support on Linux. 

I have purchased the Razer Freyja haptic gaming cushion and am trying to use for Sim racing. I have Simhub but cant see the Freyja when I try and add a new device. I have it connected, on and have the Razer Synapse app aswell. No idea how to connect it.

Hello, could you please tell me if support for the THX Competitive mode is planned for the game Arena Breakout: Infinite?

This was buggy on Synapse 3 and broke in beta. So, grateful to see Synapse 4 was taken out of beta with all the bugs included too.. And even more bugs, as things that were half working now completely don’t anymore.. Awesome progress 😂 Problem: Actuation key travel adjustments do not save, and stay at the default 2.5mm, even when setting all keys using the sync all keys to say the max 3.6mm... it will still stay at 2.5mm!!! This is the most annoying bug, as it has literally removed a major functionality from the device. So, I’d be very grateful if it could be fixed. Then maybe I can at least half use it for something other then using it to catch dust 🤷 And before you say reinstall it, etc.. Already tried  all the 101 of installation fixing..  

Just bought a Blackshark V3 headset and wanted to test out the THX Game Profiles for Battlefield 6. They posted on Razer official facebook page that it was added in October 2nd. I can’t activate it. I checked several posts on reddit and V3 owners have the same issue while the older headphones are working fine with the THX profile. This is false advertising and I want to ask ,what are you waiting for RAZER TO ADD IT FOR YOUR NEW HEADSETS!!! THEY WON’T FIX UNTIL ENOUGH PEOPLE COMPLAIN ON SOCIAL MEDIA. What incompetence!! 

Dear Razer Team,Hi, I need to know why my mouse is not working. Let’s look at the picture. Do you see extra buttons that the mouse allows to change anything keyblind? It works when the mouse is moving, click and drag, but the extra button won’t work on Synapse 4. However, my mouse works fully on Synapse 3, unlike Synapse 4.Please let me know if you plan to add the list to this mouse or fix it. I’m really disappointed that I used Synapse 4. I hope you will understand this. Thank you.Best regards,keehin2002

I’ve already sent this to support but I thought I’ll put this here too.This is an issue I have only on Synapse4.Basically, when ever I cycle keymap(I use 1 as main and 2 for some obscure shortcuts) and use it, Synapse can randomly overwrite the 2nd keymap with the mapping of 1st’s.Here’s a video of me reproducing this issue by spamming keys while cycling, but this has happened multiple times when I’m using Tautarus normally and I don’t spam keys.My temporary solution for this is to dupe the preset so I can switch to it when it happens, delete the original and dupe the dupe for next time...

I ran into an issue with Razer Synapse 4 not showing wireless battery percentage for 2 different wireless models. Both are listed as officially supported and backwards compatible with Synapse 3 and both had the same exact issue with no battery percentage displaying. I uninstalled Synapse 4 and reinstalled Synapse 3. BAM! I can now see all wireless mouse battery percentages. I attempted to troubleshoot with support but it took way too long to get valuable responses and I’m not interested in downloading a software log capture tool. Will check out Synapse 4 at a later date perhaps.I thought I’d post this for anyone who has a similar problem as all of the threads I’ve seen are requesting PM’s and don’t show a resolution status or troubleshooting steps.

I’ve used the Razer skill to set up lighting routines for a couple years.  It suddenly stop working in Synapse3.  Went through the steps of reconnecting the amazon and razer accounts, and it completes as usual but the skill never enables in Alexa.  Installed Synapse4 with same results.

Hi everyone,My device: Razer Blade 18 (2024) – Intel i9-14900HX / RTX 4080 / Windows 11 Home I’m having an issue where Razer Synapse doesn’t start automatically with Windows, or if it does, it launches very late after the system boots. Until Synapse finally loads, my keyboard shows random lighting effects instead of my saved Chroma profile. Here’s what I’ve already tried (without success): Enabled “Start Razer Synapse on system startup” in the settings. Checked Task Manager → Startup tab (Synapse is enabled). Made a custom Task Scheduler entry to start Synapse at login (with and without delay). Set Synapse to run as administrator. Verified that Razer Synapse Service and Razer Central Service are set to “Automatic” and running. Reinstalled Synapse completely (including deleting leftover Razer folders from AppData and Program Files). Despite all this, Sy

im on firmware 1.0.2.0 and my sidetone has a really annoying delay and it sounds badhas anyone found a fix?ive tried things other people tried on different headsets but nothing worked

For many years in synapse 3 I had Excel linked to special profile. After migrating to synapse 4 few months ago I was unable to do so, so had to roll back to S3. Now, few weeks ago I tried S4 again and it worked this time. But today it stopped working. In the linked games tab excel was shown with comment "game not found". I deleted it from the list and tried to re-add it. For some reason when I choose Excel.exe with "brose" menu nothing happens, and it returns to the menu of linked games.That is very frustrating for me, since Excel profile is the most important function in synapse for me.

Hey all, Synapse 4 was working perfectly fine until I decided to give it a refresh by closing it from the system tray. I relaunched it, it automatically updated, and now my laptop (Razer Blade 16 2025) is not being detected. It’s listed as ‘disconnected’ under connected devices.I have uninstalled it, repaired it, performed a windows update, and rebooted my laptop multiple times to no avail.  It seems like a random update to synapse caused this issue, since it was working perfectly fine until I restarted synapse. I use synapse for smart battery charging, etc, so I am kind of reliant on it working properly.  Coming here to see if anyone else is experiencing this issue. 

Blackwidow V4 Pro and Synapse 4 installed.If Synapse is running and I run other certain apps, like a music streaming app, multimedia keys don’t work there and volume control stops working. As soon as I exit the music streaming app, volume control shows up reacting to the roll bar with significant delay. But sometimes it stops working at all. Only if I exit Synapse, it’ll be working.I tried all the steps proposed by support documentation, like rei-installation of the keyboard driver, Windows update and clean re-installation of Synapse, but they didn’t work.

For a while now Razer Synapse 4 was working great and I had no issues with it but today I opened it and it started to crash over and over a few seconds after opening - at one point it looked like it was going to try to install an update but then it said installation failed and crashed. I tried restarting my laptop and also uninstalling synapse and going to the website to download the latest version of the installer and reinstalling it but this also failed. I am running on a razer blade 18 (2024) with rtx4090 and intel core i9 14900hx on windows 11 latest udate

Hello. I bought the Kraken V4 X headset. Now I've set everything up and THX spatial audio is working fine, but when I look in BF6 and in the app, I can only select Stereo or THX spatial audio as my profile.But BF6 has other profiles. How can I activate them?

I am using the Razer Blackwidow V4 low-profile TKL keyboard and the Synapse 4 software. When I try to allocate the hypershift-function to a custom key the hypershift option does not appear (I have seen videos on YouTube with other keyboard, where the hypershift option (arrow) appears when clicking on a custom key). So right now, the only way to activate Hypershift is the FN key, which is too far away for my purposes. I want to use the CapsLock key to trigger hypershift. Can we expect to get this functionality in future Synapse and/or keyboard firmware updates? This is actually an essential function I need to have using this keyboard.

Hypershift still does not work on Synapse 4 for my Deathadder V3 pro. It does work on my Huntsman kayboard. The only way to make it work on my mouse is to close down synapse completely then it starts to work again. I’ve been reporting this for around a year now please get it sorted or I will be forced to switch eco systems where I know the features I need work properly.

Hi.Probably all know that macro on synapse 4 not working the same as in synapse 3.I just created support ticket and report an issue, this will be probably the most curved road but maybe I will handle that.I notice that macro from synapse 3 moved to synapse 4 is played once even if option is set “play while assigned key is pressed”There is an option to set a loop for but if I add this option I give a information in synapse 4 that’s it required razer synapse…I have walkaround but it’s impacting on lighting on all your razer devices which might be dangerous for them.When I have installed both synapses - 3 and 4, Im able to use macro from synapse 3 and lighting from synapse 4 but there is some sort of glitch on the lighting, its turning off for a second randomly. If someone will use this walkaround you are using on your own risk.I will update the thread when I will have some information from

The THX Game Profiles just don’t work at all, first there’s no games or apps recognized automatically, second when I try to add a executable and confirm it literally does nothing a the list continues empty, I just upgraded to windows 11 and the issue also happened in windows 10, so reinstalling synapse don’t work, pls help

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