# Licence key is not valid for version 4 **URL:** \ **Category:** Wowza Streaming Engine\ **Created:** [March 11, 2019, 4:59am UTC](https://community.wowza.com/t/licence-key-is-not-valid-for-version-4/52971 "2019-03-11T04:59:34Z")\ **Posts on this page:** 15\ **Page:** 1
**Author:** ![hada\_park](https://avatars.discourse-cdn.com/v4/letter/h/ea5d25/32.png) [@hada\_park](https://community.wowza.com/u/hada_park)\ **Post date:** [March 11, 2019, 4:59am UTC](https://community.wowza.com/t/licence-key-is-not-valid-for-version-4/52971/1 "2019-03-11T04:59:34Z")
download lastest version WowzaStreamingEngine-4.7.7-linux-x64-installer.run #sudo chmod +x WowzaStreamingEngine-4.7.4-linux-x64-installer.run #sudo ./WowzaStreamingEngine-4.7.4-linux-x64-installer.run press Enter again and insert trial key but Wowza Streaming Engine Setup - Warning: This license key is not valid for version 4. Please enter a valid key. help! ---
**Author:** ![Andrew\_Kennedy1](https://avatars.discourse-cdn.com/v4/letter/a/278dde/32.png) [@Andrew\_Kennedy1](https://community.wowza.com/u/Andrew_Kennedy1)\ **Post date:** [March 11, 2019, 11:55am UTC](https://community.wowza.com/t/licence-key-is-not-valid-for-version-4/52971/2 "2019-03-11T11:55:57Z")
Hi, Please do open a support ticket as it suggests something is not correct either with your installation process or the key you have been given as part of a trial key. Andrew. ---
**Author:** ![hada\_park](https://avatars.discourse-cdn.com/v4/letter/h/ea5d25/32.png) [@hada\_park](https://community.wowza.com/u/hada_park)\ **Post date:** [March 12, 2019, 1:25am UTC](https://community.wowza.com/t/licence-key-is-not-valid-for-version-4/52971/3 "2019-03-12T01:25:08Z")
Hi, Thank you for comment! What means “open a support ticket”? ㅜㅜ what can i do? When installing wowza, do I need to match the version with other services? Java has installed version 1.8 of open jdk. ---
**Author:** ![hada\_park](https://avatars.discourse-cdn.com/v4/letter/h/ea5d25/32.png) [@hada\_park](https://community.wowza.com/u/hada_park)\ **Post date:** [March 12, 2019, 4:46am UTC](https://community.wowza.com/t/licence-key-is-not-valid-for-version-4/52971/4 "2019-03-12T04:46:34Z")
i solved problem!! trial key format was wrong. when installing wowza, insert key ET1E4-xXj4H-wC6Jd-rytQE-uBe4Y-3hQCV not ET1E4-xXj4H-wC6Jd-rytQE-uBe4Y-3hQCV-78GdFHyhUdz4 (example key is expired) ---
**Author:** ![Rose\_Power-Wowza\_Com](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/rose_power-wowza_com/32/431_2.png) [@Rose\_Power-Wowza\_Com](https://community.wowza.com/u/Rose_Power-Wowza_Com)\ **Post date:** [March 12, 2019, 3:06pm UTC](https://community.wowza.com/t/licence-key-is-not-valid-for-version-4/52971/5 "2019-03-12T15:06:55Z")
Thank you for updating the community. In the future, if you are having issues that can’t be resolved here in the forums, you can open a support ticket and our engineers will take a look at your files and help you with with a problem you may have. You can submit a support ticket here: [https://www.wowza.com/support/open-ticket](https://www.wowza.com/support/open-ticket) ---
**Author:** ![hada\_park](https://avatars.discourse-cdn.com/v4/letter/h/ea5d25/32.png) [@hada\_park](https://community.wowza.com/u/hada_park)\ **Post date:** [March 13, 2019, 4:32am UTC](https://community.wowza.com/t/licence-key-is-not-valid-for-version-4/52971/6 "2019-03-13T04:32:42Z")
ㅜㅜ it’s not working. i install wowza another server. i have same problem. I tried many times and succeeded. It’s not exactly this, I just put “sudo” in front of “./WowzaStreamingEngine-4.7.7-linux-x64-installer.run” command. i delete all. I started again from the beginning. this time, i put “sudo” in front of “chmod +x” command. If you are experiencing the same problem, please try it in a number of ways. ---
**Author:** ![arik\_halperin](https://avatars.discourse-cdn.com/v4/letter/a/eb9ed0/32.png) [@arik\_halperin](https://community.wowza.com/u/arik_halperin)\ **Post date:** [August 27, 2019, 1:45pm UTC](https://community.wowza.com/t/licence-key-is-not-valid-for-version-4/52971/7 "2019-08-27T13:45:45Z")
I have the same issue, non of the above seems to work. Can anyone help? ---
**Author:** ![mayur\_shelar](https://avatars.discourse-cdn.com/v4/letter/m/958977/32.png) [@mayur\_shelar](https://community.wowza.com/u/mayur_shelar)\ **Post date:** [September 16, 2019, 10:21am UTC](https://community.wowza.com/t/licence-key-is-not-valid-for-version-4/52971/8 "2019-09-16T10:21:41Z")
I have the same issue, non of the above seems to work. Can anyone help? ---
**Author:** ![Rose\_Power-Wowza\_Com](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/rose_power-wowza_com/32/431_2.png) [@Rose\_Power-Wowza\_Com](https://community.wowza.com/u/Rose_Power-Wowza_Com)\ **Post date:** [September 16, 2019, 5:56pm UTC](https://community.wowza.com/t/licence-key-is-not-valid-for-version-4/52971/9 "2019-09-16T17:56:00Z")
I would open a support ticket and have us take a closer look at your files. As stated earlier, this is not normal behavior when installing. [https://www.wowza.com/support/open-ticket](https://www.wowza.com/support/open-ticket) ---
**Author:** ![Straya\_panda](https://avatars.discourse-cdn.com/v4/letter/s/b38774/32.png) [@Straya\_panda](https://community.wowza.com/u/Straya_panda)\ **Post date:** [September 26, 2019, 12:51am UTC](https://community.wowza.com/t/licence-key-is-not-valid-for-version-4/52971/10 "2019-09-26T00:51:27Z")
Having the same problem, received the trial license but getting the same error. ---
**Author:** ![Rose\_Power-Wowza\_Com](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/rose_power-wowza_com/32/431_2.png) [@Rose\_Power-Wowza\_Com](https://community.wowza.com/u/Rose_Power-Wowza_Com)\ **Post date:** [October 2, 2019, 7:48pm UTC](https://community.wowza.com/t/licence-key-is-not-valid-for-version-4/52971/11 "2019-10-02T19:48:40Z")
Did you get this resolved @Straya panda? ---
**Author:** ![Antonio\_Casula](https://avatars.discourse-cdn.com/v4/letter/a/94ad74/32.png) [@Antonio\_Casula](https://community.wowza.com/u/Antonio_Casula)\ **Post date:** [October 27, 2019, 7:59am UTC](https://community.wowza.com/t/licence-key-is-not-valid-for-version-4/52971/12 "2019-10-27T07:59:35Z")
same problem … ---
**Author:** ![Vipul\_Suthar1](https://avatars.discourse-cdn.com/v4/letter/v/6f9a4e/32.png) [@Vipul\_Suthar1](https://community.wowza.com/u/Vipul_Suthar1)\ **Post date:** [December 13, 2019, 11:43am UTC](https://community.wowza.com/t/licence-key-is-not-valid-for-version-4/52971/13 "2019-12-13T11:43:23Z")
hi there, i have just signed up for trial but it says “this product key is not valid for version 4” ---
**Author:** ![video\_streaming](https://avatars.discourse-cdn.com/v4/letter/v/22d042/32.png) [@video\_streaming](https://community.wowza.com/u/video_streaming)\ **Post date:** [December 13, 2019, 1:25pm UTC](https://community.wowza.com/t/licence-key-is-not-valid-for-version-4/52971/14 "2019-12-13T13:25:08Z")
Hello @Vipul Suthar and thank you for signing up for the trial. Quick tip on how the forums work: The answer can be found by typing your question in the forums search bar. It will pull up several posts, but here is the one that resolves your issue- open the link and the answer is highlighted in green. [http://community.wowza.com/community/questions/53500/please-fix-trial-registration-key.html](http://community.wowza.com/community/questions/53500/please-fix-trial-registration-key.html) ---
**Author:** ![Erich\_Steffen](https://avatars.discourse-cdn.com/v4/letter/e/a183cd/32.png) [@Erich\_Steffen](https://community.wowza.com/u/Erich_Steffen)\ **Post date:** [December 18, 2019, 2:43am UTC](https://community.wowza.com/t/licence-key-is-not-valid-for-version-4/52971/15 "2019-12-18T02:43:57Z")
same with me