# SSL issue when using duplicati

**URL:** <https://forum.duplicati.com/t/ssl-issue-when-using-duplicati/11504>\
**Category:** Support\
**Created:** [January 7, 2021, 5:03pm UTC](https://forum.duplicati.com/t/ssl-issue-when-using-duplicati/11504 "2021-01-07T17:03:16Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![angle\_mort](https://forum.duplicati.com/user_avatar/forum.duplicati.com/angle_mort/32/5124_2.png) [@angle\_mort](https://forum.duplicati.com/u/angle_mort)\
**Post date:** [January 7, 2021, 5:03pm UTC](https://forum.duplicati.com/t/ssl-issue-when-using-duplicati/11504/1 "2021-01-07T17:03:16Z")

</div>

cat /etc/lsb-release  
DISTRIB\_ID=Ubuntu  
DISTRIB\_RELEASE=18.04  
DISTRIB\_CODENAME=bionic  
DISTRIB\_DESCRIPTION=“Ubuntu 18.04.5 LTS”

uname -a  
Linux moji 4.15.0-126-generic #129-Ubuntu SMP Mon Nov 23 18:53:38 UTC 2020 x86\_64 x86\_64 x86\_64 GNU/Linux

Duplicati Version: - 2.0.5.1\_beta\_2020-01-18

cat /etc/default/duplicati

DAEMON\_OPTS="–webservice-sslcertificatefile=/etc/ssl/certs/moji.p12 --webservice-sslcertificatepassword=somepass --webservice-interface=any --webservice-port=8200 --portable-mode"

===

Hi,

When browsing to the duplicati URL, I have valid ssl connection (valid certificate) but the page does not load, it is going in a circle.

From systemctl status, I have :

Critical error occured : System.PlatformNotSupportedException: Operation is not supported on this platform.

But when I dont use ssl options from /etc/default/duplicati, it works using http.

What could be the issue ?

Thanks in advance !

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<div class="post-metadata">

**Author:** ![drwtsn32](https://forum.duplicati.com/user_avatar/forum.duplicati.com/drwtsn32/32/2591_2.png) [@drwtsn32](https://forum.duplicati.com/u/drwtsn32)\
**Post date:** [January 7, 2021, 5:28pm UTC](https://forum.duplicati.com/t/ssl-issue-when-using-duplicati/11504/2 "2021-01-07T17:28:38Z")

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What version of mono are you using?

This thread may be relevant: [Latest Mono not supporting SSL correctly](https://forum.duplicati.com/t/latest-mono-not-supporting-ssl-correctly/9289/5)

It offers a workaround. I’m not sure if this issue has been fixed or not in Duplicati.

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<div class="post-metadata">

**Author:** ![angle\_mort](https://forum.duplicati.com/user_avatar/forum.duplicati.com/angle_mort/32/5124_2.png) [@angle\_mort](https://forum.duplicati.com/u/angle_mort)\
**Post date:** [January 7, 2021, 5:40pm UTC](https://forum.duplicati.com/t/ssl-issue-when-using-duplicati/11504/3 "2021-01-07T17:40:49Z")

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mono --version  
Mono JIT compiler version 6.12.0.90 (tarball Fri Sep 4 14:01:23 UTC 2020)  
Copyright © 2002-2014 Novell, Inc, Xamarin Inc and Contributors. [www.mono-project.com](http://www.mono-project.com)  
TLS: \_\_thread  
SIGSEGV: altstack  
Notifications: epoll  
Architecture: amd64  
Disabled: none  
Misc: softdebug  
Interpreter: yes  
LLVM: yes(610)  
Suspend: hybrid  
GC: sgen (concurrent by default)

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<div class="post-metadata">

**Author:** ![drwtsn32](https://forum.duplicati.com/user_avatar/forum.duplicati.com/drwtsn32/32/2591_2.png) [@drwtsn32](https://forum.duplicati.com/u/drwtsn32)\
**Post date:** [January 7, 2021, 5:44pm UTC](https://forum.duplicati.com/t/ssl-issue-when-using-duplicati/11504/4 "2021-01-07T17:44:15Z")

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Thanks, if you missed my recent post edit, check it out for a link to a related thread.