# Addon installation failed - native messaging

**URL:** <https://discourse.mozilla.org/t/addon-installation-failed-native-messaging/76814>\
**Category:** Add-ons\
**Created:** [March 11, 2021, 1:36pm UTC](https://discourse.mozilla.org/t/addon-installation-failed-native-messaging/76814 "2021-03-11T13:36:02Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![RajendraK](https://avatars.discourse-cdn.com/v4/letter/r/839c29/32.png) [@RajendraK](https://discourse.mozilla.org/u/RajendraK)\
**Post date:** [March 11, 2021, 1:36pm UTC](https://discourse.mozilla.org/t/addon-installation-failed-native-messaging/76814/1 "2021-03-11T13:36:02Z")

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I am developing a native messaging based firefox web extension. To get the signed addon, I have created a developer account and submitted the zip file. When I tried to install the addon (.xpi downloaded) on Windows 7 32 bit with firefox version 61.0, it gives below error:  
This add-on could not be installed because it appears to be corrupt

Logs in browser console: add-on is not correctly signed, Invalid XPI - Signing Verification failed.

This addon gets installed (and rest functionality also works) when I installed using about:debugging options.

Again same downloaded .xpi addon gets successfully installed on mac os.

Please help with possible issue.

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**Author:** ![hans\_squared](https://sea1.discourse-cdn.com/flex001/user_avatar/discourse.mozilla.org/hans_squared/32/67424_2.png) [@hans\_squared](https://discourse.mozilla.org/u/hans_squared)\
**Post date:** [March 11, 2021, 1:40pm UTC](https://discourse.mozilla.org/t/addon-installation-failed-native-messaging/76814/2 "2021-03-11T13:40:45Z")

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Please create a zip file of the add-on, and attach it to your reply.  
(The “Upload” icon is the arrow pointing up, 7th from the left)

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**Author:** ![freaktechnik](https://sea1.discourse-cdn.com/flex001/user_avatar/discourse.mozilla.org/freaktechnik/32/37766_2.png) [@freaktechnik](https://discourse.mozilla.org/u/freaktechnik)\
**Post date:** [March 11, 2021, 2:22pm UTC](https://discourse.mozilla.org/t/addon-installation-failed-native-messaging/76814/3 "2021-03-11T14:22:21Z")

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Does installing any other extension from [addons.mozilla.org](http://addons.mozilla.org) work on that machine? If not, please make sure your time is set correctly.

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**Author:** ![RajendraK](https://avatars.discourse-cdn.com/v4/letter/r/839c29/32.png) [@RajendraK](https://discourse.mozilla.org/u/RajendraK)\
**Post date:** [March 12, 2021, 2:05am UTC](https://discourse.mozilla.org/t/addon-installation-failed-native-messaging/76814/4 "2021-03-12T02:05:56Z")

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After setting time correctly, it is working fine. Thanks a lot…!