Razer Synapse

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

Synapse for Windows - V4.0.86.2608040510 / Chroma for Windows - V4.0.63.2607310752RELEASE NOTES5 AUGUST 2026Razer Blade 16 (2025) - Repeated device package downloads after each Synapse restart Razer Blade 16 (2026) - Keyboard brightness settings not applying consistently after switching between AC and battery power Razer Freyja - A2H stops working after prolonged audio playback Minor UI bugs and issues PREVIOUS RELEASE NOTES30 JULY 2026Razer Huntsman V3 Tenkeyless 8KHz - On-The-Fly Macro (OTFM) not working correctly28 JULY 2026Updated THX Driver to V3.2.3 Razer Kraken Kitty V2 Pro Razer Kraken V3 HyperSense Razer Kraken V3 16 JULY 2026Certain macros crashing Razer Huntsman V3 Pro Mini - HyperShift not working Devices randomly powering off Razer Basilisk V3 Pro 35K Phantom Series Razer Cobra Pro Razer BlackWidow V4 75% 10 JULY 2026Razer Huntsman V3 Tenkeyless - Macro & Keystroke Interruption not working correctly8 JULY 2026New THX Game Profiles Crimson Desert Darwin’s Paradox

Hello all, Since using synapse 4 I've got some troubles with my profiles for minecraft Java. Normaly I add the Java file in my games and it works. But with synapse 4 it delete it from the game list after every boot of minecraft and when it doesn't delete it it put it graued out saying it doesn't find it.  Is there another way or do I have to roll back to synapse 3? Thanks in advance

Hi,I am using a Viper V3 Hyperspeed and Synapse 4. On-the-fly sensitivity function does not work correctly. It works correctly only in Synapse 3.I assign it to a side button (i.e. button 4 on the side) and then hold down that button. When I move the mouse wheel up or down, DPI status appears in the bottom right but:The bar is not visible and does not respond to mouse wheel up or down Mouse sensitivity is instantly changed to 30,000 and stays there regardless The Sensitivity DPI box shows blank even though it is at 30k This is extremely frustrating as on-the-fly sensitivity is important for FPS games. Any fixes on the horizon? Mouse firmware has also been updated to the latest version.   

With a lot of people moving from Windows to CachyOS and other Linux distributions, I am yet another person asking the question of Razer:When will you provide official support for Razer products and Synapse on Linux? 

Synapse for Mac is relentlessly opening the system settings, prompting me to grant it permissions that it has absolutely no business asking for.I’m using a mouse with no RGB lighting, so Screen & System Audio Recording is unnecessary. Full Disk Access? Seriously? That’s a huge ask for an app that adjusts my mouse sensitivity. I don’t even need Bluetooth access, because this mouse has a dongle. It’s one thing to ask, but when the app is open, it constantly pops open the dialog asking for these things, and if you focus the window, it will open the related pages in the system settings. It’s extremely intrusive.

Aside from the profile not automatically switching, even manually setting the profile as default results in it not working in the game. It keep using the default one.Anybody else experiencing this? Problems started appearing after following instructions to uninstall Synapse in regards to another issue. Double checked settings. Even did the trick of installing Chroma app to disable the apps. 

I was wondering if razer is planning to add their V3 pro to synapse web driver support anytime soon. looking forward to try it :D

Hello,I would like to report what appears to be a regression in Razer Synapse 4 regarding macro execution speed, compared to Synapse 3.I am using onboard memory profiles with macros created previously in Synapse 3.When Synapse 4 is completely closed, the macros execute instantly with no noticeable delay, exactly as configured (0 ms delay). However, as soon as Synapse 4 is running, a significant delay appears between macro actions - even when the macro itself is set to 0 ms delay.I have prepared two videos that clearly demonstrate this difference in macro execution speed:• Synapse 3 (fast / no delay): https://youtu.be/NsiYelsQUrk• Synapse 4 (noticeable delay): https://youtu.be/9Bn-Bn-WMZkIn both videos, the same macro profile was used; the only difference is whether Synapse 4 was running or not. The behavior suggests that Synapse 4 intercepts or throttles hardware macros, inserting a forced minimum delay.This was not present in Synapse 3, and represents a performance downgrade that affe

After a recent update Synapse and Chroma the backlight on the device stopped working (only in visualizer). Everything else is working:I believe this is some kind of bug in the code.Has anyone encountered the same problem?

So i just bought a new Razer Basilisk V3 today. When i tired to connect it to Razer Synapse, it wouldn’t show up. I have an M1 MacBook Air (2020) in good condition and the mouse works well. It’s way better than my old mouse. But it comes with RGB and an extra button, which I would like to customize. Is there any possible way for me to do that with my Mac? ( I’ve seen different versions of this mouse like the pro one, but the box doesnt seem to say pro or any numbers next to it, just Basilisk V3 )

Hi Razer team,I'd like to request support for the Razer Basilisk V3 X HyperSpeed (model RZ01-04870100) in Synapse for Mac.My setup:- Device: Razer Basilisk V3 X HyperSpeed- Model: RZ01-04870100- Mac: MacBook Pro (Apple Silicon)- Synapse for Mac: latest version installed- Connection tested: both HyperSpeed wireless dongle and BluetoothCurrent situation:The mouse works as a basic pointing device, but Synapse for Mac does not detect it. This means I cannot configure:- Side buttons (Mouse 4, Mouse 5)- Middle click- Sensitivity Clutch (third side button)- DPI settings- RGB lighting- On-board profilesI see that Basilisk V3 Pro, V3 35K, and V3 Pro 35K are already supported. Could you please add the V3 X HyperSpeed (RZ01-0487) to the supported devices list as well? It's a current-generation product and many Mac users own it.Thanks for the work on bringing Synapse to macOS — looking forward to broader device support in future updates. 

So, I’m obviously not the first person to say this, which makes it even more infuriating, but Synapse 4 is the worst experience I’ve ever had with a software in my life. I don’t understand how a supposed “upgrade” to Synapse 3 is STILL a broken and buggy mess this long after it’s been launched, when Synapse 3 worked perfectly fine. If I could, I’d just stay with Synapse 3 indefinitely, but of course, Razer is forcing everyone to switch over within the next few months. I’ll just start with the main minor inconvenience I’ve dealt with: Synapse 4 takes absolutely forever to start up. So instead of seeing the custom profile that’s stored in my keyboards’ onboard memory, I see the generic ugly solid orange, green etc., until I fully log in and wait 10-15 seconds. This isn’t the end of the world, but definitely an annoyance, because with Synapse 3, it was pretty much instant and even started up when I was still on my computer’s log-in screen. What is even the point of having the onboard memo

Hey, Razer PLEASE add support for the DeathAdder essential mouse on Synapse for Mac Preview. Thanks!Love you!

Hi everyone,A few weeks ago (I believe right after a Windows update), I started noticing brief mouse "stutters" during the first minutes after startup — it would happen once or twice, then stop, with no crash. I had never experienced this before.A few days ago, this escalated: the mouse stuttered, then both my monitors went completely black and the system became fully unresponsive — mouse frozen, no input at all. I had to force a shutdown via the power button.I checked Event Viewer afterward and found a Kernel-Power Event ID 41 (Critical) with BugcheckCode 0, meaning no clean BSOD or crash dump was written — just a full hard freeze. I also ran a complete hardware diagnostic (UserDiag) right after: 0 WHEA errors, 0 incidents, everything nominal on temps/voltages/components. So the hardware looks completely healthy.I'm on Windows 11 25H2, using a Razer DeathAdder with Synapse. I just did a full clean uninstall/reinstall of Synapse (using the official CleanupRazerDrivers tool) to see if i

I was using synapse 3, although it can’t open for long time, the profile still works. Then i upgrade it to synapse 4, the profile not work.Is there any way to reinstall working synapse 3 to export the profile or get the synapse 3 cloud backup profile?I cant find a working synapse 3 installer, and the one i have says cant connect to server :(

DId this update change anything in the Razer Chroma API?I may not be wording it correctly, but my issue is several of the devices I was lighting in my development project have suddenly stopped working.I am using Razer Chroma SDK for Unity installed from https://github.com/WyvrnOfficial/Unity_ChromaSDK.git and all WAS working well until this update.. Now I am only getting lights on mousepad, mouse and mouse dock. Keyboard, Seiren, Tartarus, Aether strip have all stopped responding to requests to light up.I think the problem might be in ChromaAnimationAPI, specifically ChromaAnimationAPI.SetEffectCustom2D(int device, int[ ] colors) is no longer working.To be clear, I’m not asking if the github repo changed, I'm asking about the underlying chroma service that this github repo would be interacting with.Can anyone confirm if this update changed this API?Is anyone else suddenly having issues using this API or lighting some devices?

Hi everyone,I’m posting this because I would like to know if anyone else is experiencing the same issue with Razer Synapse 4 and the Razer Kraken V3 Pro. For almost a year, I have been dealing with an audio-related issue on my Kraken V3 Pro. After trying many possible fixes, I have found that the problem only happens when Razer Synapse is installed and running.When Synapse is removed or you disable audio signal enhancements ( video example, at the end ), the issue disappears. The main problem is that volume changes are delayed across the whole system.When I lower or increase the volume, the actual audio level does not change immediately. Instead, the volume change is applied after around 1–4 seconds.This happens when changing volume through:Windows volume slider Spotify volume slider Other app volume controlsThe audio itself is not delayed. Only the volume adjustment is delayed.This becomes very annoying and sometimes painful because when a notification plays or a new audio source star

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.

Hi Razer, I recently bought your wolverine v3 TE 8k, i love this controller a lot, but i find the software very limited. I used to be able to apply anti-dead zone settings to my controller to counter the fairly high dead zone in older games, as well as customize the aiming curve using Bézier curves, for example. Unfortunately, your software doesn't offer all these options, including the ability to adjust the dead zone more precisely, in increments of 1 instead of 3, as was possible with the Vader 5 Pro software. I think implementing this in your software would greatly improve its quality and credibility with many gamers. It would also offer a complete controller experience (which is excellent) that I unfortunately find somewhat hampered by the software, or at least not used to its full potential.Thank you for your attention !! 

Hi,I’m having a persistent microphone issue with my Razer BlackShark V2 HyperSpeed when using Razer Synapse 4 on Windows.Environment Headset: Razer BlackShark V2 HyperSpeed (wireless dongle, 2.4 GHz) Software: Razer Synapse 4 (latest version as of today) OS: Windows 11 (fully updated) Connection: Dongle plugged directly into the PC (rear USB port) Default input device in Windows: “Microphone (Razer BlackShark V2 HS 2.4)” Issue summaryWhen Synapse 4 is running, using the physical mic mute button on the headset causes my microphone input volume to be forced to 0 and it stays at 0 even after unmuting. In Synapse 4, on the “Mic” tab, the mic toggle switches ON/OFF correctly, but the mic input level slider stays locked at 0 after I mute once. In Windows sound settings, the input device is set correctly and the volume is normally at around 80. After the issue occurs, the Windows input volume also drops to 0 and stays there, as shown in the screenshots. Because of this, even when

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.

Given the BIG AMOUNT of problems that synapse 4 has, specially with my Tartarus pro, I mistankely trusted on the new version Synapse 4 and now I MUST return to synapse 3 to preserve my previous functionality, how can I return to that version? I cannot see a place to download synapse 3 installer for windows, any ideas?