Connexion impossible depuis le web

Bonjour,

J’aimerais arriver Ă  dĂ©nouer des problĂšmes avec le NC de mon mari. Lui et moi sommes admin dessus, j’arrive Ă  m’y connecter sans problĂšme, mais impossible pour son compte.

Il a mail avec mailo, son mdp est complexe (30 caractĂšres), je l’ai modifiĂ© depuis la console d’administration et sauvegardĂ© sur un bloc note temporaire pour des copier collĂ©s, il n’y a pas d’espace supplĂ©mentaire. J’ai essayĂ© la connexion avec son mail complet ou juste son nom, impossible.

Si je clique sur “renvoyer le mail de bienvenue”, ou “rĂ©initialiser le mdp”, il ne reçoit jamais de mail (j’ai vĂ©rifiĂ© les spams).

Pourquoi ça bloque spĂ©cifiquement pour son compte ? Est-ce parce que son nom d’affichage a une majuscule au dĂ©but de son prĂ©nom ?

Je sĂšche complĂštement sur ce problĂšme !

EDIT : voici ce que j’obtiens dans les logs :

[no app in context] Erreur: Exception thrown: Sabre\DAV\Exception\NotFound
PROPFIND /public.php/dav/files/moi-mĂȘme/
de 178.132. par – à 27 juin 2026, 21:46:48

{
  "reqId": "akAoqBVBNVVMFFgNtbdDEQAAA6A",
  "level": 3,
  "time": "2026-06-27T19:46:48+00:00",
  "remoteAddr": "XXXXXX",
  "user": "--",
  "app": "no app in context",
  "method": "PROPFIND",
  "url": "/public.php/dav/files/charlotte/",
  "scriptName": "/public.php",
  "message": "Exception thrown: Sabre\\DAV\\Exception\\NotFound",
  "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:152.0) Gecko/20100101 Firefox/152.0",
  "version": "33.0.4.1",
  "exception": {
    "Exception": "Sabre\\DAV\\Exception\\NotFound",
    "Message": "",
    "Code": 0,
    "Trace": [
      {
        "file": "/home/clients/73aa00dd80e156e339e84f79477ba5fa/sites/XXXX/apps/dav/lib/Connector/Sabre/PublicAuth.php",
        "line": 82,
        "function": "checkToken",
        "class": "OCA\\DAV\\Connector\\Sabre\\PublicAuth",
        "type": "->",
        "args": []
      },
      {
        "file": "/home/clients/73aa00dd80e156e339e84f79477ba5fa/sites/XXXXX/3rdparty/sabre/dav/lib/DAV/Auth/Plugin.php",
        "line": 179,
        "function": "check",
        "class": "OCA\\DAV\\Connector\\Sabre\\PublicAuth",
        "type": "->",
        "args": [
          {
            "__class__": "Sabre\\HTTP\\Request"
          },
          {
            "__class__": "Sabre\\HTTP\\Response"
          }
        ]
      },
      {
        "file": "/home/clients/73aa00dd80e156e339e84f79477ba5fa/sites/XXXXXX/3rdparty/sabre/dav/lib/DAV/Auth/Plugin.php",
        "line": 135,
        "function": "check",
        "class": "Sabre\\DAV\\Auth\\Plugin",
        "type": "->",
        "args": [
          {
            "__class__": "Sabre\\HTTP\\Request"
          },
          {
            "__class__": "Sabre\\HTTP\\Response"
          }
        ]
      },
      {
        "file": "/home/clients/73aa00dd80e156e339e84f79477ba5fa/sites/XXXXXX/3rdparty/sabre/event/lib/WildcardEmitterTrait.php",
        "line": 89,
        "function": "beforeMethod",
        "class": "Sabre\\DAV\\Auth\\Plugin",
        "type": "->",
        "args": [
          {
            "__class__": "Sabre\\HTTP\\Request"
          },
          {
            "__class__": "Sabre\\HTTP\\Response"
          }
        ]
      },
      {
        "file": "/home/clients/73aa00dd80e156e339e84f79477ba5fa/sites/XXXXXX/3rdparty/sabre/dav/lib/DAV/Server.php",
        "line": 456,
        "function": "emit",
        "class": "Sabre\\DAV\\Server",
        "type": "->",
        "args": [
          "beforeMethod:PROPFIND",
          [
            {
              "__class__": "Sabre\\HTTP\\Request"
            },
            {
              "__class__": "Sabre\\HTTP\\Response"
            }
          ]
        ]
      },
      {
        "file": "/home/clients/73aa00dd80e156e339e84f79477ba5fa/sites/XXXXXX/apps/dav/lib/Connector/Sabre/Server.php",
        "line": 212,
        "function": "invokeMethod",
        "class": "Sabre\\DAV\\Server",
        "type": "->",
        "args": [
          {
            "__class__": "Sabre\\HTTP\\Request"
          },
          {
            "__class__": "Sabre\\HTTP\\Response"
          }
        ]
      },
      {
        "file": "/home/clients/73aa00dd80e156e339e84f79477ba5fa/sites/XXXXXX/apps/dav/appinfo/v2/publicremote.php",
        "line": 168,
        "function": "start",
        "class": "OCA\\DAV\\Connector\\Sabre\\Server",
        "type": "->",
        "args": []
      },
      {
        "file": "/home/clients/73aa00dd80e156e339e84f79477ba5fa/sites/XXXXXXX/public.php",
        "line": 90,
        "args": [
          "/home/clients/73aa00dd80e156e339e84f79477ba5fa/sites/XXXXXX/apps/dav/appinfo/v2/publicremote.php"
        ],
        "function": "require_once"
      }
    ],
    "File": "/home/clients/73aa00dd80e156e339e84f79477ba5fa/sites/XXXXXX/apps/dav/lib/Connector/Sabre/PublicAuth.php",
    "Line": 133,
    "message": "",
    "exception": "{\"class\":\"Sabre\\DAV\\Exception\\NotFound\",\"message\":\"\",\"code\":0,\"file\":\"/home/clients/73aa00dd80e156e339e84f79477ba5fa/sites/XXXX/apps/dav/lib/Connector/Sabre/PublicAuth.php:133\",\"trace\":\"#0 /home/clients/73aa00dd80e156e339e84f79477ba5fa/sites/XXXX/apps/dav/lib/Connector/Sabre/PublicAuth.php(82): OCA\\DAV\\Connector\\Sabre\\PublicAuth->checkToken()\\n#1 /home/clients/73aa00dd80e156e339e84f79477ba5fa/sites/XXXX/3rdparty/sabre/dav/lib/DAV/Auth/Plugin.php(179): OCA\\DAV\\Connector\\Sabre\\PublicAuth->check(Object(Sabre\\HTTP\\Request), Object(Sabre\\HTTP\\Response))\\n#2 /home/clients/73aa00dd80e156e339e84f79477ba5fa/sites/XXXX/3rdparty/sabre/dav/lib/DAV/Auth/Plugin.php(135): Sabre\\DAV\\Auth\\Plugin->check(Object(Sabre\\HTTP\\Request), Object(Sabre\\HTTP\\Response))\\n#3 /home/clients/73aa00dd80e156e339e84f79477ba5fa/sites/XXXX/3rdparty/sabre/event/lib/WildcardEmitterTrait.php(89): Sabre\\DAV\\Auth\\Plugin->beforeMethod(Object(Sabre\\HTTP\\Request), Object(Sabre\\HTTP\\Response))\\n#4 /home/clients/73aa00dd80e156e339e84f79477ba5fa/sites/XXXX/3rdparty/sabre/dav/lib/DAV/Server.php(456): Sabre\\DAV\\Server->emit('beforeMethod:PR...', Array)\\n#5 /home/clients/73aa00dd80e156e339e84f79477ba5fa/sites/XXXX/apps/dav/lib/Connector/Sabre/Server.php(212): Sabre\\DAV\\Server->invokeMethod(Object(Sabre\\HTTP\\Request), Object(Sabre\\HTTP\\Response))\\n#6 /home/clients/73aa00dd80e156e339e84f79477ba5fa/sites/XXXX/apps/dav/appinfo/v2/publicremote.php(168): OCA\\DAV\\Connector\\Sabre\\Server->start()\\n#7 /home/clients/73aa00dd80e156e339e84f79477ba5fa/sites/XXXX/public.php(90): require_once('/home/clients/7...')\\n#8 {main}\"}",
    "CustomMessage": "Exception thrown: Sabre\\DAV\\Exception\\NotFound"
  },
  "id": "6a40295aef58f"
}

Salut
Plusieurs questions pour avancer:
→ c’est un nextcloud autohĂ©bergĂ© ou chez un hĂ©bergeur ?
→ les paramĂštres du serveur de mail sont bien configurĂ©s dans le NC ? sinon il ne recevra jamais les emails de rĂ©initialisation du mot de passe.
→ tu as essayĂ© de changer l’email associĂ© au compte ?