Submit a license request from a command line and browser (macOS, Linux)
This section provides information on the following licensing management issues:
- Activation issues
- Issues with returns
- Answers to other questions
- Additional resources
Activation issues
If you encounter any error codes or other problems during the activation process, they might be caused by the following issues:
| Issue: | Solution: |
|---|---|
| No internet access | Try to activate your license with a license request. For more information, see Manual license activation. |
| Security settings block Unity | Review your firewall, proxy, or internet security settings. They might be blocking Unity from sending and receiving data about your license file. |
| No write privileges for saving the license file | Grant or obtain write permissions to the user account you are using to activate a license. This often occurs in closed networks, such as those at workplaces and schools. Contact your IT administrator to find out whether there are any restrictions in place. |
| License fails to recognize your machine | Major operating system changes or updates might affect your machine’s ID, which might cause your license to stop recognizing your machine. See this Unity Knowledge Base article: I Have Just Updated/Installed A New Operating System. Why Is My License Failing To Activate? |
| Unity’s license servers are down | See the Unity Cloud System Status Page for status updates on all Unity servers. |
| Too many license activations |
Return your license if you no longer need it for a specific machine.
You must return your license before you switch machines. You must also return your license before you make any hardware changes or OS changes to your machine. If you fail to return the license, the Unity license server sees a request from another machine and informs you that you have reached your activation limit for the license. If you get this message but you think it’s an error, you can always return all licenses at once, and then reactivate each machine as needed. |
| Account credentials not recognized | Make sure you enter your details correctly. Passwords are case sensitive, so make sure you enter them exactly as registered. To reset your password, go to I forgot my password.
You can also receive failed login or activation errors if you or your build server exceed the login rate limit, which is 10 logins per minute. If you are still having problems logging in, contact support@unity3d.com. |
Issues with returning licenses
If you encounter any error codes or other problems while returning your license, they might be caused by the following:
| Issue: | Solution: |
|---|---|
| You can’t return your license by using the Unity Hub because you can’t access your computer | 1. Go to https://id.unity.com/ and log in with your Unity ID. 2. Select My Account > My Seats in the side menu. 3. Select the activation you want to deactivate, then select Remove selected activations. If you want to return all activations in one action, select Disable all activations. If you have licenses activated on other computers, you need to re-activate them later. If you still can’t return your license, email support@unity3d.com and explain your situation. Include these details: — The serial number you were using on the machine. The Support Team can return your license manually if you provide the above information; however, it can take some time. This process is only available for purchased licenses. |
Answers to other questions
| Question: | Answer: |
|---|---|
| How many machines can I install my copy of Unity on? | Every paid commercial Unity license allows one person to use Unity on two machines that they have exclusive use of. It doesn’t matter where the machines are physically located or what operating system they are running.
Educational licenses sold via Unity or any one of our resellers are only good for a single activation. The same goes for Trial licenses (Unity 4.x only), unless otherwise stated. The free version of Unity cannot be licensed by a commercial entity with annual gross revenues (based on fiscal year) in excess of US$100,000, or by an educational, non-profit or government entity with an annual budget of over US$100,000. If you are a Legal Entity, you cannot combine files developed with the free version of Unity with any files developed by you (or by any third party) through the use of Unity Pro. See our EULA for further information regarding license usage. |
| Can I use the current version of Unity with a Serial number from a previous version? | If the serial number you want to use is for Unity versions 2.x, 3.x, or 4.x, you need to purchase a new Unity Plus or Pro license. Go to the online store or contact Unity sales.
If the serial number you want to use is for Unity version 5.x and later, you can use the same serial number. |
| I have two licenses, each with an add-on I require, how do I activate them in unison on my machine? | You may use a single license on only one machine at a time. You cannot activate two or more licenses at the same time on one machine. |
| How can I use different Unity versions? | Unity assumes that only a single version of Unity can be run on a machine. You can, however, have multiple Unity versions installed and running on your machine. These versions all need the same serial number. If you have different versions of Unity which need different licenses, you need a way to copy licenses around. For example, you could store the licenses on your Desktop. Before running a specific version, copy the Unity license (.ulf) file into the location where the license needs to be stored.
For any further assistance, please contact at support@unity3d.com. |
| I am planning to replace an item of hardware and/or my OS. What should I do? | You must return your license before you make any hardware changes or OS changes to your machine. You must also return your license before you switch machines. If you fail to return the license, the Unity license server sees a request from another machine and informs you that you have reached your activation limit for the license. |
| Where is my Unity license file stored? | — macOS: /Library/Application Support/Unity
— Linux: — Windows: Note: If Windows User Account Control (UAC) has restricted your access to |
Additional resources
- Unity Support article, Licenses
- Unity Support article, Activations and Management
- Contact Unity Customer Services for more assistance.
Submit a license request from a command line and browser (macOS, Linux)
It started as a normal day
I have a story I want to share with you, could help if you’ll find yourself in a similar situation. A month or so ago I had to hop on to Unity to check some work we’ve completed and it showed me the most unexpected, invalid license related problem.
Invalid license?
I use unity via the Hub; their convenient launcher for managing installations and projects. On this day though, it greeted me with a message to enter my license details. I found it unusual but in our line of work tokens expire all the time. I entered my details.

From then on any project I tried to open caused the editor to simply shut down without displaying any errors. I tried to create a new project. It started up fine, however the editor was in “free” mode which was weird as I have a pro license for it.
In the Hub the license page showed disabled controls and indefinitely animating progress bar. I thought it was a network connectivity issue. I checked our connection to the Unity services but it was all fine. The Hub was configured to communicate through the firewall and act as a server on the local network as well.
I then contacted Unity support but while waiting for their response I started digging around.
Attempts at problem solving
The Hub showed I had an active, valid license and its last update was a a while ago but it should be OK.
I then tried to automatically activate the license but then I got an error saying my license key was not valid. I then went for the manual option. Saved the licence request file-thing. Uploaded it to the website, entered the licence key and I got an error saying “serial has reached the maximum number of activations.” This was weird as the license allows for activation on two computers and I only had two associated with my account. My desktop and the laptop I was trying to work on.

Solved it!
I verified that the key and the machine names were correct. I decided to remove and re-add my laptop just in case.
It worked! Simply removing the seat and re-adding the key sorted the problem.
The cause
It turns out hat a license is associated with a machine using various bits of information about the machine and the OS. One part of this meta data is the edition of the OS running on the machine. As I previously upgraded Windows home to pro; which I completely forgot about, made this bit different and suddenly my license wasn’t valid. Unity support later confirmed this.
What thew me off was the messaging around the problem wasn’t clear. Luckily after poking around for some time I managed to solve it. Unity support also confirmed they will look into improving the messaging around such cases in the hub.
Do you have any stories about Unity licensing? Let me know in the comments below.
Excerpt imageis by Inzmam Khan from Pexels.
If you have any comments, ideas or personal experiences, feel free to share with us. We are curious to hear new ideas, solutions, and perspectives regarding the above. Don’t forget to follow us on our social media!
You can also find the rest of our blog here!
Артём Новосёлов
2 года назад
Всем удачи по жизни!!! Спасибо за хорошие слова!!!
_Asimetria_
2 месяца назад
Работает.
Vana Pavlov
7 месяцев назад
я сделал тоже самое.не получилось😢
Уроки по Python
9 месяцев назад
Спасибо большое!!
Сода — BS
10 месяцев назад
У тебя голос как у Wargack
Alex. Ander
11 месяцев назад
Я всё сделал также но при создании проекта юнити крашается
торчик
1 год назад
ооо спасибо большое , лайк
Иван Шевченко
1 год назад
помогло
Ar4ikTV
1 год назад
Люди а что делать если кнопка «ACTIVATE NEW LICENS» не активна и на неё нельзя нажать что делать тагда?
Calibry
1 год назад
Лицензия активирована, я в аккаунте, но она все равно не работает, просить активировать новую я активировал, и он все равно просит активировать чё мне делать, я все нервы потратил на эту херню
PESOK5
1 год назад
Спасибо
Greenle
1 год назад
Огроооооооооооооомное спасибо)
RUFI
1 год назад
Спасибо большое за решение проблемы удачи тебе 😘
Muyrs Aryn
1 год назад
СПАСИИИИИИИИИБОООООООО ОГРОМНОЕЕЕЕ !!!!!!!!!!!!! Я НАШЕЛ РЕШЕНИЕ У ТЕБЯ И У ИНОСТРАНЦА ! У ИНОСТРАНЦА ПОНЯЛ ЧТО НАДО ВОЙТИ В АККАУНТ А С ТЕБЯ ЭТО СПСССССССССС
воаля
1 год назад
Благодарю
ShpeNAt M.P
1 год назад
Спасибо!!
Kyrie Zone
1 год назад
Пасибо помог
Петр Лохтин
1 год назад
артем, у меня я нажимаю получить лицензию, и она не появляется, что делать?
Обозор Мир
1 год назад
Ты болеешь
I finally found a way to fix this problem.
First of all you have to know that the issue was with the license, it didn’t activate properly, so it just keeps trying to activate again and again, and that’s where the bucle was.
To solve this, i follow some steps made by myself, that came from a lot of research and combining some tutorials for others problems.
The first problem was I log-in only once, the first time I installed. After that I was unable to login again even with reinstall and remove registry. So I couldn’t stop the bucle.
To fix that you need to uninstall Unity, remove registry (Ccleaner for example) and remove some hidden directories manually:
C:ProgramDataUnity
C:ProgramFilesUnity or C:ProgramFiles(x86)Unity
C:Users(username)AppDataLocalUnity
C:Users(username)AppDataLocalLowUnity
C:Users(username)AppDataRoamingUnity
After removing all those files, you can have a clean install of unity, if you don’t remove those, it will keeps login in on the same acc and keeping the bucle on.
So, after doing that the bucle will stop and it will let you login again. First problem solved
Now if you log-in the bucle will happen again, so we need to activate the license without login in. And we’re doing it with the offline activation.
- Unplug your ethernet, disconect from wifi, whatever, just make sure you don’t have connection.
- Open Unity and check that says «No connection: Quit or Manual Activation».
- Click «Manual Activation» and download the License Request.
- Close Unity and connect your internet.
- Go to the official Unity Manual Activation Page and upload your Request File.
- Download the aproved license, it will request you an Unity account.
- Unplug again the internet and open Unity on offline mode.
- Click «Manual Activation» and upload the Aproved License.
- Make sure you have now access to Unity on offline mode and close it.
Second problem solved: License activated.
Now you only need to connect again your internet, then open Unity and you will see an activated license without login-in, so you can now log-in with the account you used on step 6.
And now the problem is solved. You have the activated license and you’re logged-in.
It tooks me like «2 days» to make this solution for this poblem, hope i can help someone with this tuto and save ur time.