# sslv3 alert certificate unknown

**URL:** <https://forums.digi.com/t/sslv3-alert-certificate-unknown/20472>\
**Category:** Digi TransPort WR (Series)\
**Tags:** openvpn, wr31\
**Created:** [May 8, 2019, 4:34pm UTC](https://forums.digi.com/t/sslv3-alert-certificate-unknown/20472 "2019-05-08T16:34:39Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Ba5tian](https://avatars.discourse-cdn.com/v4/letter/b/ac8455/32.png) [@Ba5tian](https://forums.digi.com/u/Ba5tian)\
**Post date:** [May 8, 2019, 4:34pm UTC](https://forums.digi.com/t/sslv3-alert-certificate-unknown/20472/1 "2019-05-08T16:34:39Z")

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Hello,

OpenVpn ist working flawless but i get this error:

13:13:14, 07 May 2019,Certificate Code Error  
Lib: SSL routines  
Func: ssl3\_read\_bytes  
Reason: sslv3 alert certificate unknown

Is it be firmware related and can be ignored? It’s a WR31 with Firmware version 7.0.1.3  
The event log is flooded with this error.

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**Author:** ![Ba5tian](https://avatars.discourse-cdn.com/v4/letter/b/ac8455/32.png) [@Ba5tian](https://forums.digi.com/u/Ba5tian)\
**Post date:** [November 21, 2019, 8:34am UTC](https://forums.digi.com/t/sslv3-alert-certificate-unknown/20472/2 "2019-11-21T08:34:17Z")

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Same here.  
Sometimes no error but the last 5 devices have it.

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**Author:** ![nicolaus](https://avatars.discourse-cdn.com/v4/letter/n/87869e/32.png) [@nicolaus](https://forums.digi.com/u/nicolaus)\
**Post date:** [January 21, 2020, 4:48am UTC](https://forums.digi.com/t/sslv3-alert-certificate-unknown/20472/3 "2020-01-21T04:48:01Z")

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Hi,  
This issue is caused by the router using a self-signed certificate or certificate that was signed with CA that is not in the trusted CA store on your browser.  
If you install a certificate from a well known trusted CA this error would not happen.  
This error can be ignored.

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**Author:** ![jpaczkow](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.digi.com/jpaczkow/32/9_2.png) [@jpaczkow](https://forums.digi.com/u/jpaczkow)\
**Post date:** [February 7, 2020, 4:40pm UTC](https://forums.digi.com/t/sslv3-alert-certificate-unknown/20472/4 "2020-02-07T16:40:38Z")

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Hello Ba5tian and nicolaus,

As nicolaus has pointed out, this caused by using a self-signed certificate in Chrome. Just install the certificate and this error will disappear or use:

event 0 ev\_filter 98

To filter out the error.

James  
Digi Technical Support Engineer