Synology has been shutdown for too long

Hi all,

I have a Synology DS918+ and it has been shut down for more than 180 days.
It seems as if my account for the domain may have disappeared that Synology has not updated the LetsEncrypt account when being shut down. And I am not able to log in to Synology due to that being configured to use 2-FA and also because configured to use SSL traffic plus the certificate is too old, thus I am not able to log in with the admin account.

Is it possible to renew manually on LetsEntrypt or does it have to be triggered via the server?

My domain is:

I ran this command: n/a

It produced this output: n/a

My web server is (include version): unknown

The operating system my web server runs on is (include version): DSM 7.0

My hosting provider, if applicable, is:

I can login to a root shell on my machine (yes or no, or I don't know):

I'm using a control panel to manage my site (no, or provide the name and version of the control panel): No (via Synology DSM)

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you're using Certbot): n/a

I'd try another browser.
Possible one that is older and allows you to continue when an expired cert is encountered.

Directory Listing: /pub/firefox/releases/50.0/ (


Unless HSTS is set up (or it's outside the HSTS window), I believe very up to date browser lets you override any certificate issue? With HSTS it's more difficult, but browers have methods to "forget" saved HSTS stuff.


I don't believe currently Let's Encrypt "forgets"/removes unused accounts. So it wouldn't matter if your account was idle for more than 180 days as far as I know.


Thank you for your quick response.
I was able to get to the login page, but could not login due to the 2-FA for some reason. And the only way was to try and reset the Synology in a mode 1 setup, where the password has been forgotten.
Now I am not able to access it at all I discovered.

So based on your answer, I assume it cannot be due to LetsEncrypt.

Again, thank you for such quick response!


I have no idea what a Synology "mode 1 setup" is, but if that means the entire Synology has been factory reset/wiped, the Let's Encrypt cert is probably gone too, right?


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