Announcements

Support For Self-Signed SSL Certificates (And How HTTPS URLs Are Handled).

Written by Tomas Koprusak 107 words | 1 min read Updated Nov 13, 2025
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Since the beginning, Uptime Robot was supporting URLs with SSL certificates (https).

However, self-signed certificates (the ones with unknown CAs) were not supported as they were generating errors like “unknown certificate”, etc. and Uptime Robot was considering these websites to be down.

Today, URLs with self-signed certificates are now supported just like any other URL (as you already know the certificate is self-signed and no need to throw alerts).

On the other hand, for any type of https URLs, if the certificate is an invalid one (like the common name and URL not matching) or the date is expired, Uptime Robot will keep sending a down alert.

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Written by

Tomas Koprusak

Product Owner |

He has worked for Sygic as a marketer and co-led the implementation and development of a product acquired from a competitor. He has also worked as a freelance developer, helping clients from various areas. Tomas brings a wealth of industry experience to our team. He spent a few years in the blockchain industry, leading projects and marketing teams at multiple blockchain-based companies. He has presented products and managed deals in more than 10 countries around the world, managed the ICO, and built a successful marketing team at Fuergy that continues to thrive. Tomas managed a product team for the biggest job site in Slovakia, covering development and transformation to a new B2B app. Not only is Tomas skilled at web development, but he also has a deep understanding of SaaS businesses, which makes him an invaluable asset in shaping and leading various projects at UptimeRobot. His focus is always on the continual improvement of our service and user experience. In addition to his professional achievements, Tomas is a devoted father. His personal interests include cycling (he traveled around the whole country of Slovakia), playing guitar (he even played in a band), servicing bikes, music, and enjoying good beer.

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19 Comments

Fanr Oct 6, 2010 at 4:38 am

my account can not sign in,it says "The account is not activited" and I still not recieved the first e-mail,my account is fanr001#gmail.com,thanks!

admin Oct 26, 2010 at 5:54 am

@Fanr,

Just saw your comment and after checking the account details, I saw that it is already activated. So, things should be cool.

John Feb 19, 2015 at 12:22 pm

Does https certificate expiry still work? I have a site with an expired certificate, trying to set up monitoring tell me if it happens again but UpTimeRobot tells me the site is up while Chrome tells me it is down.

Umut Muhaddisoglu Mar 3, 2015 at 12:22 pm

That behavior has changed and UR currently ignores certificate errors.

We'll be adding an option for that.

John Kobe Sep 24, 2015 at 12:22 pm

Did UR ever add SSL monitoring capabilities?

Umut Muhaddisoglu Oct 11, 2015 at 12:22 pm

It is not available yet, however, it is almost on top of the to-do-list.

Palle Jan 25, 2016 at 12:22 pm

Is there an ETA on Certificate Checking?

We just discovered certificates where not being validated, this is a critical monitor for us.

A.D. Feb 2, 2016 at 12:22 pm

I too would like an ETA on Certificate Checking.

Holger May 3, 2016 at 12:22 pm

Up! With awareness of the complexity of SSL verification this is needed by us, too.

Umut Muhaddisoglu Oct 31, 2017 at 12:22 pm

It is ready and available now.

Umut Muhaddisoglu Oct 31, 2017 at 12:22 pm

It is ready and available now.

Gary Pendlebury Jun 16, 2016 at 8:29 am

It appears that certificate validity is not currently being monitored. Do you have an ETA?

Umut Muhaddisoglu Jul 19, 2016 at 8:29 am

Although no ETA, we are currently working on this.

Alex de Landgraaf Nov 3, 2016 at 8:29 am

Hi Umut, Is there an ETA for this now? Your original comment was from march 2015 on this issue and this is something we (as a paying UR customer) do require to alert on certificate expirations. If only as an optional functionality when checking a https-URL, with any caveats as we know certificate checking can be tricky.

Umut Muhaddisoglu Jan 27, 2017 at 8:29 am

We are now actively working on this and plan to make it ready within weeks.

Daniel Yehuda Jul 6, 2017 at 8:29 am

Hi there!

We just ran into a problem where our cert expired and yet uptime robot happily told us that our services were still running. This is a major problem / deal-breaker for us. The last post on this thread said the issue was actively being worked on in January.

Has there been any progress on this yet?

Thanks,
Daniel

Kasper Garnæs Jul 18, 2017 at 8:29 am

Any update on this?

Francis Aug 21, 2017 at 8:29 am

Is this feature ready? Do we have to activate a setting for this?

Umut Muhaddisoglu Oct 31, 2017 at 8:29 am

Yes, it is ready and available now.

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