# Unable to Join Zoom session after interruption **URL:** \ **Category:** iOS\ **Tags:** ios\ **Created:** [July 9, 2025, 11:36pm UTC](https://devforum.zoom.us/t/unable-to-join-zoom-session-after-interruption/135037 "2025-07-09T23:36:04Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![prw3100](https://avatars.discourse-cdn.com/v4/letter/p/ec9cab/32.png) [@prw3100](https://devforum.zoom.us/u/prw3100)\ **Post date:** [July 9, 2025, 11:36pm UTC](https://devforum.zoom.us/t/unable-to-join-zoom-session-after-interruption/135037/1 "2025-07-09T23:36:04Z")
Hi @boonjun.tan, Our team is currently integrating the latest `Zoom Video SDK iOS (v2.2.10)`. We’ve encountered an issue where, 2 users are in a meeting and one of the users are the process of active data transmission via the Zoom command channel, the same user then interrupts the app by swiping up from the bottom of the iPad—causing their app to become inactive. Upon relaunching the app and attempting to rejoin the session, `ZoomVideoSDK.shareInstance()?.joinSession(sessionContext)` unexpectedly returns `nil`. The only workaround that allows that user to reconnect is to fully quit and relaunch the app. We’ve attached the complete set of Zoom debug logs for your review ( [Zoom Video SDK: Unable to Join Session Post Interruption - Google Drive](https://drive.google.com/drive/folders/1_1hLRrkLcjgKamOdAVKwUThP-mcoLJwY?usp=sharing) ). We’re committed to resolving this issue and would appreciate any guidance or insights you can provide. Please let us know if there’s any additional information we can share to assist the investigation ---
**Author:** ![boonjun.tan](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/boonjun.tan/32/38306_2.png) [@boonjun.tan](https://devforum.zoom.us/u/boonjun.tan)\ **Post date:** [July 10, 2025, 1:39am UTC](https://devforum.zoom.us/t/unable-to-join-zoom-session-after-interruption/135037/2 "2025-07-10T01:39:20Z")
Hi @prw3100, I will investigate your log first but also I will like to share that Zoom VSDK do have a heartbeat whenever such cases happen that you will be able to see from the console log, unless it expires, then you will get a onSessionLeave callback to notify the developers/users. Only when the user is indeed not within a session then the joinSession will work. ---
**Author:** ![prw3100](https://avatars.discourse-cdn.com/v4/letter/p/ec9cab/32.png) [@prw3100](https://devforum.zoom.us/u/prw3100)\ **Post date:** [July 10, 2025, 3:55pm UTC](https://devforum.zoom.us/t/unable-to-join-zoom-session-after-interruption/135037/3 "2025-07-10T15:55:52Z")
Hi @boonjun.tan, Please let us know if you have an update on this. The user in that state is unable to join the current session or another session with a different session name ---
**Author:** ![prw3100](https://avatars.discourse-cdn.com/v4/letter/p/ec9cab/32.png) [@prw3100](https://devforum.zoom.us/u/prw3100)\ **Post date:** [July 25, 2025, 11:06pm UTC](https://devforum.zoom.us/t/unable-to-join-zoom-session-after-interruption/135037/4 "2025-07-25T23:06:41Z")
Hi @boonjun.tan, Any update on this issue? ---
**Author:** ![boonjun.tan](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/boonjun.tan/32/38306_2.png) [@boonjun.tan](https://devforum.zoom.us/u/boonjun.tan)\ **Post date:** [July 29, 2025, 1:53am UTC](https://devforum.zoom.us/t/unable-to-join-zoom-session-after-interruption/135037/5 "2025-07-29T01:53:15Z")
Hi @prw3100, After the app becomes inactive, at what duration later did you bring the app back to active mode? As mentioned previously, we do have a heartbeat for such cases that you will be able to see from the console log, unless it expires, then you will get a onSessionLeave callback along with the meeting status in your console log. So the rejoin should only happen if you did get the onSessionLeave callback instead and not when the SDK attempts to reconnect back to the session. ---
**Author:** ![prw3100](https://avatars.discourse-cdn.com/v4/letter/p/ec9cab/32.png) [@prw3100](https://devforum.zoom.us/u/prw3100)\ **Post date:** [July 30, 2025, 2:48am UTC](https://devforum.zoom.us/t/unable-to-join-zoom-session-after-interruption/135037/6 "2025-07-30T02:48:22Z")
Hi @boonjun.tan, The app becomes active within a few seconds. Are you suggesting that if a heartbeat is present, then `ZoomVideoSDK.shareInstance()?.isInSession()` should return `true`? Assuming the heartbeat is active, why are we unable to join a different session? Even when we attempt to join a session with a different `sessionName`, the join operation fails under the current conditions. ---
**Author:** ![prw3100](https://avatars.discourse-cdn.com/v4/letter/p/ec9cab/32.png) [@prw3100](https://devforum.zoom.us/u/prw3100)\ **Post date:** [August 4, 2025, 5:58pm UTC](https://devforum.zoom.us/t/unable-to-join-zoom-session-after-interruption/135037/7 "2025-08-04T17:58:47Z")
Hi @boonjun.tan , Any update to the issue? I was able to reproduce the issue again on the latest sdk. During the so called heartbeat, ZoomVideoSDK.shareInstance()?.isInSession() gives me false and still am unable to join the meeting until i quit and relaunch the app. The logs can be found here [Aug 4th, 2025 Zoom Video SDK: Unable to Join Session Post Interruption - Google Drive](https://drive.google.com/drive/folders/1iZIZZ8aMoi7VCrxYo9HMdOZnAPtjkK1f?usp=drive_link) ---
**Author:** ![boonjun.tan](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/boonjun.tan/32/38306_2.png) [@boonjun.tan](https://devforum.zoom.us/u/boonjun.tan)\ **Post date:** [September 4, 2025, 3:26am UTC](https://devforum.zoom.us/t/unable-to-join-zoom-session-after-interruption/135037/8 "2025-09-04T03:26:51Z")
@prw3100, Yes, you are right. The `ZoomVideoSDK.shareInstance()?.isInSession()` will during `true.` You can join a new session but will have to leave the previous session first. I just tested again with our 2.3.5 and I am getting the same status true and I went back to the same session, or if I quit I can join another session with another JWT token. Can I check when you join a new session with a different sessionName, are you using a new JWT token because the token contains the sessionName. ---
**Author:** ![prw3100](https://avatars.discourse-cdn.com/v4/letter/p/ec9cab/32.png) [@prw3100](https://devforum.zoom.us/u/prw3100)\ **Post date:** [September 18, 2025, 4:37pm UTC](https://devforum.zoom.us/t/unable-to-join-zoom-session-after-interruption/135037/9 "2025-09-18T16:37:45Z")
Hi @boonjun.tan, Joining the new session with a different session name is showing the same behavior ---
**Author:** ![prw3100](https://avatars.discourse-cdn.com/v4/letter/p/ec9cab/32.png) [@prw3100](https://devforum.zoom.us/u/prw3100)\ **Post date:** [October 15, 2025, 8:50pm UTC](https://devforum.zoom.us/t/unable-to-join-zoom-session-after-interruption/135037/10 "2025-10-15T20:50:56Z")
@boonjun.tan, any update on the issue? ---
**Author:** ![boonjun.tan](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/boonjun.tan/32/38306_2.png) [@boonjun.tan](https://devforum.zoom.us/u/boonjun.tan)\ **Post date:** [October 31, 2025, 12:56am UTC](https://devforum.zoom.us/t/unable-to-join-zoom-session-after-interruption/135037/11 "2025-10-31T00:56:51Z")
Hi @prw3100, We have included some changes for 2.3.10 and 2.4.0 onwards on this. Can you recheck if the issues still exist with the latest Zoom VSDK 2.4.0. Thank you. ---
**Author:** ![system](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/6/1/614bdd549b610bbaa46ff934617683a02bdaa03c.png) [@system](https://devforum.zoom.us/u/system)\ **Post date:** [October 31, 2026, 12:57am UTC](https://devforum.zoom.us/t/unable-to-join-zoom-session-after-interruption/135037/12 "2026-10-31T00:57:34Z")
Closed on October 31, 2026, 12:57am UTC This topic was automatically closed 365 days after the last reply. New replies are no longer allowed.