

For months I have had this issue too, and today, I finally figured it out. First, to be clear, the “issue” was launching Cortex would result in a brief view of the Cortex window, and then the window would go black, resulting in my closing the application by right clicking and closing the window in the taskbar. The cause for this behavior is the HDR setting. Today, I wanted to adjust my display settings a little, and turned-off HDR. Low and behold, when I opened Cortex, it worked! It did not go blank! To verify, I turned the HDR setting back on, and guess what? Yes, the blank window. Hence, in my case, the Cortex app does not work with HDR turned-on. FYI, I have all the Razer apps set to run as administrator. I tried all the workarounds suggested other than reinstalling Windows. Try turning off HDR, and see if that works for you as well.
Thank you for sharing your issue with us via this thread. I'm Krissy. I'm happy to assist you with your issue.
Regarding your issue, please follow the below steps to troubleshoot:
1. Ensure the internet connection is good.
2. Please clear the cache by deleting this folder: C:\\ProgramData\\Razer\\Razer Central\\WebAppCache
3. Ensure that no anti-virus/VPN software is running when you log in to Razer Cortex.
4. If the issue persists, please check for host file information C:\\Windows\\System32\\drivers\\etc\\hosts, open it with notepad, and if id.razer.com has some IP assigned to it.
5. Check if you are able to access https://id.razer.com/
Thank you! We apologize for the inconvenience this issue has caused you.
The Razer Cortex PC Team
1. Install Windows on a VM(kvm) without any razer hardware plugged in
2. Install synapse and start.
That's it. if you fix this issue synapse will become useful not only for doze users but also for linux users since they can use the VM to configure the macros.
Edit: Why you didnt share the installer in public but you made all people facing the same issue waiting few days to be able to use their Razer equipment...
I am having Razer for first time in my life and the excitement is almost gone because i cant even see what i can do with those stuffs...
After all you can see the number of views on this topic and you could check it far more often than once per few days

Kind Regards,
Lyuben
I don’t understand why y’all aren’t posting the new installer public either especially since this is a known and current issue that so many of your customers are having. Please send the installer to me as well…… or you know...post it publicly for those who are having this issue so that they don’t feel like they are forced to beg for it.
Please send it to me as well
Same problem. Multiple fresh installs. Even tried to log as guest but still getting the blank screen when trying to log in. As many others I wonder why we must beg for the solution when is a common problem but here I am, so,
Hey there, we sincerely apologize for the inconvenience this issue has caused you. I have sent you the new installer via pm. Please check it. Please always feel free to send me a pm if you have any issues regarding Razer Cortex PC.
Michelle
Thought I’d post this as it may help folk that are experiencing this issue as I was close to giving up. I can’t find this specific solution anywhere on Google, Reddit or other forums, it was by trial and error.
Symptoms:
- Razer Central has a black screen window, but service is running.
- Razer Synapse will not open, but service is running.
- Left clicking on the Razer Central icon in the system tray shows you are not logged in, clicking log in does nothing.
- Internet connection all seems fine.
- Tried reinstalling latest Razer software, latest GPU drivers, etc. No joy.
Various posts saying check your connection is a bit vague as it is not specific as to what processes need access to the internet.
Make sure the process C:\Program Files (x86)\Razer\Razer Services\Razer Central\CefSharp.BrowserSubprocess.exe is not blocked by your firewall. To test, temporarily disable your firewall and reboot your PC to see if Razer Central works ok. Otherwise make sure there is an entry for this process in your firewall list for allowing outbound https internet access. Make sure all other Razer processes/apps have https access too. Do a reboot once the process is added to your firewall outbound list.

OS was Windows 11 22H2.
Security software was Bitdefender Total Security.
Hope this helps some of you out of a hole.
One potential solution you could try is to uninstall both Razer Cortex and Razer Central completely, then reinstall them both from scratch. Before doing so, make sure to back up any settings or data associated with the programs.
I installed razer cortex along with the razer central. However, when I try to open cortex a black screen pops up so I cant login/use it at all. I tried some stuff I found online but nothing worked.
- uninstall
- delete ‘C:\ProgramData\Razer’ folder
- reinstall
that did it for me.
Hello,
I need the new installer as well as I am unable to login to cortex/central and can not use the full experience of my devices. Can you please send me the new installer?
For months I have had this issue too, and today, I finally figured it out. First, to be clear, the “issue” was launching Cortex would result in a brief view of the Cortex window, and then the window would go black, resulting in my closing the application by right clicking and closing the window in the taskbar. The cause for this behavior is the HDR setting. Today, I wanted to adjust my display settings a little, and turned-off HDR. Low and behold, when I opened Cortex, it worked! It did not go blank! To verify, I turned the HDR setting back on, and guess what? Yes, the blank window. Hence, in my case, the Cortex app does not work with HDR turned-on. FYI, I have all the Razer apps set to run as administrator. I tried all the workarounds suggested other than reinstalling Windows. Try turning off HDR, and see if that works for you as well.
I have 2 monitors and a TV attached to my PC. The monitors are not compatible with HDR. The TV is and HDR was turned on in the System > Display > HDR settings. I turned it off and now Cortex is working. Even when the TV was off, apparently just having it selected was the problem.
Thank you for posting your solution!
For months I have had this issue too, and today, I finally figured it out. First, to be clear, the “issue” was launching Cortex would result in a brief view of the Cortex window, and then the window would go black, resulting in my closing the application by right clicking and closing the window in the taskbar. The cause for this behavior is the HDR setting. Today, I wanted to adjust my display settings a little, and turned-off HDR. Low and behold, when I opened Cortex, it worked! It did not go blank! To verify, I turned the HDR setting back on, and guess what? Yes, the blank window. Hence, in my case, the Cortex app does not work with HDR turned-on. FYI, I have all the Razer apps set to run as administrator. I tried all the workarounds suggested other than reinstalling Windows. Try turning off HDR, and see if that works for you as well.
THIS IS THE FIX. i spent 2 hours today and this is the solution. TURN OFF HDR.
THANK YOU
Krissy-RCD
Hey there!
Thank you for sharing your issue with us via this thread. I'm Krissy. I'm happy to assist you with your issue.
Regarding your issue, please follow the below steps to troubleshoot:
1. Ensure the internet connection is good.
2. Please clear the cache by deleting this folder: C:\\ProgramData\\Razer\\Razer Central\\WebAppCache
3. Ensure that no anti-virus/VPN software is running when you log in to Razer Cortex.
4. If the issue persists, please check for host file information C:\\Windows\\System32\\drivers\\etc\\hosts, open it with notepad, and if id.razer.com has some IP assigned to it.
5. Check if you are able to access https://id.razer.com/
Thank you! We apologize for the inconvenience this issue has caused you.
The Razer Cortex PC Team
None of it worked, and yes I am able to access https://id.razer.com/
byharu
None of it worked, and yes I am able to access https://id.razer.com/
We sincerely apologize for the inconvenience this issue has caused you. The engineering team is reproducing and fixing this issue now. We may need more time to resolve this.
We truly appreciate your patience and feedback.
Krissy
on windows
manpreetsnehra
I have been having this issue for almost a month now. No success. Here is how to reproduce the issue
1. Install Windows on a VM(kvm) without any razer hardware plugged in
2. Install synapse and start.
That's it. if you fix this issue synapse will become useful not only for doze users but also for linux users since they can use the VM to configure the macros.
Thank you for providing the details. Our engineering team will reproduce this issue with the method you provided. We sincerely apologize for the inconvenience this issue has caused you.
Krissy
autoPEARLVegasGold893
Did someone find any solutions? I created a account just because of this.
Hey there,
We have sent you a new installer via PM. Please check it. Thank you! We sincerely apologize for the inconvenience this issue has caused you.
Krissy
Krissy-RCD
Hey there,
We have sent you a new installer via PM. Please check it. Thank you! We sincerely apologize for the inconvenience this issue has caused you.
Krissy
Hi Krissy, Im having the same issue as well. Would I be able to receive the new installer? Thanks!
_Make2d
Hi Krissy, Im having the same issue as well. Would I be able to receive the new installer? Thanks!
I have sent the new installer to you via PM. Please check it. Thank you!
Krissy
I'm unable to use any of the features of Synapse 3 or Cortex or anything that require me to be logged in..
Razer Central v. 7.3.11.110 Razer Synapse v. 3.4.401.32710 Razer Cortex v. 9.4.13.995
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