# Pix4Dfields not opening on macOS Catalina 10.15.6 - Notification shows up states: R0090: Could not authenticate. There was a network issue.

**URL:** <https://community.pix4d.com/t/pix4dfields-not-opening-on-macos-catalina-10-15-6-notification-shows-up-states-r0090-could-not-authenticate-there-was-a-network-issue/17021>\
**Category:** Agriculture\
**Created:** [March 10, 2021, 3:47am UTC](https://community.pix4d.com/t/pix4dfields-not-opening-on-macos-catalina-10-15-6-notification-shows-up-states-r0090-could-not-authenticate-there-was-a-network-issue/17021 "2021-03-10T03:47:15Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![isocutej](https://avatars.discourse-cdn.com/v4/letter/i/67e7ee/32.png) [@isocutej](https://community.pix4d.com/u/isocutej)\
**Post date:** [March 10, 2021, 3:47am UTC](https://community.pix4d.com/t/pix4dfields-not-opening-on-macos-catalina-10-15-6-notification-shows-up-states-r0090-could-not-authenticate-there-was-a-network-issue/17021/1 "2021-03-10T03:47:15Z")

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```
      Notification shows up right after I enter my login info that states: R0090: Could not authenticate. There was a network issue.

      I don't know what to do. Please help.

```

Thanks,  
J

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**Author:** ![Fernanda\_Bosmediano](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/fernanda_bosmediano/32/323_2.png) [@Fernanda\_Bosmediano](https://community.pix4d.com/u/Fernanda_Bosmediano)\
**Post date:** [March 10, 2021, 11:09am UTC](https://community.pix4d.com/t/pix4dfields-not-opening-on-macos-catalina-10-15-6-notification-shows-up-states-r0090-could-not-authenticate-there-was-a-network-issue/17021/2 "2021-03-10T11:09:47Z")

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Hello,

Can you please check our suggestions detailed here: [https://support.pix4d.com/hc/en-us/articles/360038640531](https://support.pix4d.com/hc/en-us/articles/360038640531)? The issue can happen due to a proxy/antivirus/firewall on the PC that does not allow the application to validate the HTTPS certificate chain. As a result, communication with the Pix4D login server is impossible.

Please let us know if this solves your issue

Best,