Razer Synapse 4

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

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 :(

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.

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. 

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 !! 

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

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?

Razer Synapse not connected to the internet even though my computer is. That is making my mouse's macros not work. Of course it is hard to know for certain if that is the case but I don’t see anything else being wrong.

I’m experiencing an issue with my BlackShark V3 Pro after performing a firmware update through Razer Synapse.After the update:The USB dongle no longer lights up The dongle is not detected by my PC There is no audio when using wireless modeHowever:The headset still works normally when connected via USB (wired mode)I have already tried the following:Using different USB ports Restarting my PC Reinstalling Razer Synapse Attempting to re-pair the headsetThe issue started immediately after the firmware update, and it seems the dongle may have failed during the process.What can I do?Thank you.

Hi, i am unable to disable auto-updates. In the old razer snypase, there was a setting for me to disable this, however, in this new razer synapse 4, I am unable to do so. When I open the settings, there is no option for me to disable auto updates. I have attached a screenshot below  

Now can switch ANC on/off or ambient, but cannot adjust ANC level in Synapse 4 version 4.0.86.2601160905 and beta version 4.0.86.2511170410.Synapse 3 and Audio app are correctly. Since 02-Nov-2024, I reported this issue to Razer Support staff.By the way, last month (10-Dec-2025) Razer Support staff replied me that they tried to fixed.What are Razer doing?

Hello. I constantly face an issue where "RazerAppEngine Window" process prevents my PC from shutting down normally. Sometimes an additional error window pops up during this.When will this be fixed? All of this happens on new PC with a clean Windows installation. It has been more than 1 year since first post about this, but bug is still not fixed.Existing threads discussing this issue:https://insider.razer.com/razer-support-45/razerappenginie-exe-is-preventing-shutdown-74690https://insider.razer.com/razer-support-45/razerappengine-exe-prevent-windows-shutdown-76967https://insider.razer.com/razer-support-45/please-fix-synapse-4-bug-causing-computer-shutdown-issues-68815 Additionally, while looking into this problem, I noticed extremely poor RAM optimization. The RazerAppEngine process takes 0.25 GB in background, grows to 1 GB if I open the app window, and stays at 0.5 GB after closing window. And this is not counting other Razer background processes.It feels like software optimization w

I installed Razer Synapse 4 and Cortex and have problems with my Logitech mouse and my HyperX Microphone and Headset! They just begin to connect and disconnect but my Razer Blackwidow V3 doesn't have any problems at all. I searched for days and found out that it must be the fault of one of the Razer software. I re-installed everything from scratch but the same problem still happens. I don't know what to do. Can someone help me?

I sometimes get stutters on my Razer Blade 16.They happen around twice a minute or so. Usually my laptop is fine most of the time. But once the stuttering starts, it usually does not stop until I have restarted the laptop. I noticed that the stutters only really happen when my game is in fullscreen exclusive mode. On fullscreen windowed they don’t usually happen, don’t want the increased latency that comes with that though…I tried so much, all kinds of driver upgrades and downgrades, bios updates etc. etc.Eventually I kind of gave up on it until I had an idea - what if I close Razer Synapse? Turns out that when I exit razer synapse during those stuttering episodes - the stutters go away…I tried both Razer Synapse 3 and 4 reinstalls and both of them have this issue. Is there an alternative? anything I can do? The fact that the software that is there to manage everything about my laptop causes it to stutter is just unbelievably stupid.  Please tell me there is a fix? 

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? 

I just bought the Razer Pro Click V2 Vertical Edition. It’s a fantastic mouse, but I have a feature request that would elevate it to the next level for productivity tasks: a second Hypershift mapping layer.As it stands, we are limited to one Hypershift layout per profile. While application-specific profiles are helpful, they don't solve the issue of needing more easily accessible macros within a single heavy-duty program. One modifier layer is simply not enough for my daily workflow.Because the two side buttons on the left are so comfortable to reach, I would love the ability to assign them as two separate Hypershift triggers. This would allow me to have a "Standard Layout," "Hypershift 1," and "Hypershift 2"—giving me the power to remap left-click, right-click, scroll, and other buttons multiple times without ever taking my hand off the mouse or changing profiles.Implementing a secondary Hypershift layout would be a massive quality-of-life improvement for power users. Please consider

I have a few macro keys set up with button combos that include the windows-key that, naturally, don’t work when the windows-key is disabled like it is when gaming mode is turned on, so I have made sure to keep gaming mode off even when I’m in game, but in spite of that the windows-key, and therefore the aforementioned macros still don’t work when I have a game loaded up. I’ve double checked that gaming mode is still disabled when I have a game running which it definitely is, I have Razer Synapse open on my second monitor and a game on my primary monitor and I see very clearly that gaming mode is off, both the toggle for the mode itself and the “Apply in-game only” box un-checked, but the windows-key and macros still don’t want to work when playing a game. Is there a way to fix this on my end or is it just a case of Razer having fucked up and I’ll have to pointlessly wait for them to do something about it?Any and all help with this would be greatly appreciated!

I've already reinstalled it and even tried using Windows Task Scheduler, but the issue persists every time. Once I click that 'Not Responding' button and the Synapse app launches, it connects normally again. However, it's really cumbersome and inconvenient to have to manually do this every time. Is there any way to fix this

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.

I recently had uninstalled razer synapse 4 and reverted to razer synapse 3 after hours of trying to troubleshoot issues with razer synapse 4 crashing over and over again but I decided to try to give it one more chance and for some reason I thought, what if I try continuing as guest when logging in? FOR SOME REASON, THIS SOLVES MY CRASH ISSUE. I tried logging in again and IMMEDIATELY the program crashes over and over again. I uninstall and reinstall and  but log in this time to find that, sure enough, it still crashes on startup repeatedly. Uninstall and reinstall and continue as guest- NO CRASHES. So weird I don’t understand why this would be the case, maybe there is a bug with the profiles syncing or somehow my profiles got corrupted or something, I don’t know,… I also don’t know if this will solve the issue long term, and would like to be able to sync profiles or have access to my old profiles saved to my account, but for now at least it seems to work as a temporary fix for the crash

Ok, so this is probably a dumb question but how do I associate a Chromo Studio profile with a keyboard profile on my Blackwidow v4 Pro Keyboard in Synapse v4? I used to be able to do it really easily in Synapse v2 (I skipped v3). To be clear when I change to keyboard profile 1 I want to display  only the QWERTY keys in green and everything else in blue. When I change to profile 2 I want it to display only the QWERTY keys in blue and everything else in green. Simple (and not real) example but I can’t make it work. I don’t want the change to be linked to a specific game, the only thing changing is the keyboard profile. I can make it work if I select quick effects in the lighting tab but when I select Advanced Effects it doesn’t save different choices under the Chroma Studio dropdown. I’m sure I am missing something obvious but for the life of me I can’t see what. Thanks in advance for any help you can give