Error renewing certificate for Exchange

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My domain is: owa.dept-info.crosemont.quebec

I ran this command: .\wacs

It produced this output:
Authorize identifier autodiscover.dept-info.crosemont.quebec
Authorizing autodiscover.dept-info.crosemont.quebec using http-01 validation (SelfHosting)
{
“type”: “urn:ietf:params:acme:error:unauthorized”,
“detail”: “Invalid response from https://autodiscover.dept-info.crosemont.quebec/.well-known/acme-challenge/tRZBvTLsT9ha5O2e1mLehcxDBPXy4qOXWe7xAc0X2j0 [205.237.24.200]: “\r\nDocument Error: Not Found\r\n

Access Error: 404 – Not Found

\r\n

””,
“status”: 403
}
Authorization result: invalid
Authorize identifier owa.dept-info.crosemont.quebec
Authorizing owa.dept-info.crosemont.quebec using http-01 validation (SelfHosting)
{
“type”: “urn:ietf:params:acme:error:unauthorized”,
“detail”: “Invalid response from https://owa.dept-info.crosemont.quebec/.well-known/acme-challenge/ekwqiG9awE79uzbKPMLvDHXKw1Pp6dN_ZeGr3kmkGVE [205.237.24.200]: “\r\nDocument Error: Not Found\r\n

Access Error: 404 – Not Found

\r\n

””,
“status”: 403
}
Authorization result: invalid
Authorize identifier smtp.dept-info.crosemont.quebec
Authorizing smtp.dept-info.crosemont.quebec using http-01 validation (SelfHosting)
{
“type”: “urn:ietf:params:acme:error:connection”,
“detail”: “Fetching http://smtp.dept-info.crosemont.quebec/.well-known/acme-challenge/dR1Es8-_tiCTXLzOd0YAIuTxIeicBfNn-xGdmuqWR0U: Timeout during connect (likely firewall problem)”,
“status”: 400
}
Authorization result: invalid

My web server is (include version): IIS - 10.0.14393.0

The operating system my web server runs on is (include version): Server 2016 Datacenter (1607 - 14393.3686)

My hosting provider, if applicable, is:

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

I’m using a control panel to manage my site (no, or provide the name and version of the control panel):

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

Tryning to renew the certificat always give me this error. I have tryed many things, hard to list here, and I am very confused on how to solve this issue.

Thank you for any help given.

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