# Fall back : Mac create cpthost app failed

**URL:** <https://devforum.zoom.us/t/fall-back-mac-create-cpthost-app-failed/10184>\
**Category:** Electron\
**Created:** [March 30, 2020, 2:25pm UTC](https://devforum.zoom.us/t/fall-back-mac-create-cpthost-app-failed/10184 "2020-03-30T14:25:04Z")\
**Posts on this page:** 1\
**Showing post:** 11

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**Author:** ![bella.tu](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/bella.tu/32/1227_2.png) [@bella.tu](https://devforum.zoom.us/u/bella.tu)\
**Post date:** [April 1, 2020, 2:41am UTC](https://devforum.zoom.us/t/fall-back-mac-create-cpthost-app-failed/10184/11 "2020-04-01T02:41:51Z")

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Hi  
1.The APP works without signature, so the electron SDK is fine.  
2.A signed APP should not have any file copy or other operations, otherwise it may cause package damage, some functions can not be used。  
3.Please make sure had re-sign all sdk file!  
4.Whether the Hardened Runtime is turned on and the runtime.entitlements is used when signing? Microphone and canera permissions also need to add to the runtime.entitlements.

 ![屏幕快照 2020-04-01 上午10.25.15](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/2X/7/70ab24cfa1165688a4b0e6bb23a8d53e64d49617.png)

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