diff --git a/src/govoplan_files/backend/router.py b/src/govoplan_files/backend/router.py
index ff02ead..e27dacf 100644
--- a/src/govoplan_files/backend/router.py
+++ b/src/govoplan_files/backend/router.py
@@ -109,6 +109,8 @@ from govoplan_files.backend.storage.connector_credential_store import (
     create_connector_credential_row,
     get_connector_credential_row,
     list_database_connector_credentials,
+    resolve_reusable_connector_credential,
+    reusable_credential_id,
     update_connector_credential_row,
 )
 from govoplan_files.backend.storage.connector_credential_deletion import (
@@ -742,11 +744,25 @@ def _credential_row_for_profile(
     *,
     credential_profile_id: str | None,
     provider: str,
+    profile_id: str | None = None,
+    scope_type: str = "tenant",
+    scope_id: str | None = None,
     include_disabled: bool = False,
 ):
     credential_id = (credential_profile_id or "").strip()
     if not credential_id:
         return None
+    if reusable_credential_id(credential_id):
+        if not profile_id:
+            raise FileStorageError("File connection id is required for reusable credentials")
+        return resolve_reusable_connector_credential(
+            session,
+            tenant_id=principal.tenant_id,
+            credential_ref=credential_id,
+            profile_id=profile_id,
+            scope_type=scope_type,
+            scope_id=scope_id,
+        )
     row = get_connector_credential_row(
         session,
         tenant_id=principal.tenant_id,
@@ -2904,6 +2920,9 @@ def create_connector_profile(
             principal,
             credential_profile_id=payload.credential_profile_id,
             provider=payload.provider,
+            profile_id=payload.id,
+            scope_type=payload.scope_type,
+            scope_id=payload.scope_id,
         )
         _ensure_connector_configuration_allowed(
             session,
@@ -3156,6 +3175,9 @@ def update_connector_profile(
             principal,
             credential_profile_id=credential_profile_id,
             provider=provider,
+            profile_id=row.id,
+            scope_type=row.scope_type,
+            scope_id=row.scope_id,
             include_disabled=True,
         )
         _ensure_connector_configuration_allowed(
diff --git a/src/govoplan_files/backend/storage/connector_credential_store.py b/src/govoplan_files/backend/storage/connector_credential_store.py
index 76c2544..546b2fe 100644
--- a/src/govoplan_files/backend/storage/connector_credential_store.py
+++ b/src/govoplan_files/backend/storage/connector_credential_store.py
@@ -5,8 +5,17 @@ from dataclasses import dataclass
 from typing import Any
 
 from sqlalchemy.orm import Session
+from sqlalchemy import inspect
 
 from govoplan_core.core.policy import normalize_policy_scope_type, policy_source_path
+from govoplan_core.security.credential_envelopes import (
+    CredentialAccessContext,
+    CredentialEnvelope,
+    CredentialEnvelopeError,
+    ResolvedCredentialEnvelope,
+    list_credential_envelopes,
+    resolve_credential_envelope,
+)
 from govoplan_core.security.secrets import decrypt_secret, encrypt_secret
 from govoplan_files.backend.db.models import FileConnectorCredential
 from govoplan_files.backend.storage.common import FileStorageError
@@ -14,6 +23,8 @@ from govoplan_files.backend.storage.connector_deployment import reject_api_contr
 from govoplan_files.backend.storage.connector_policy import ConnectorPolicySource, connector_policy_sources_from_payload
 from govoplan_files.backend.storage.connector_profiles import supported_connector_providers
 
+CORE_CREDENTIAL_ENVELOPE_PREFIX = "credential-envelope:"
+
 
 @dataclass(frozen=True, slots=True)
 class ConnectorCredential:
@@ -33,6 +44,7 @@ class ConnectorCredential:
     policy_sources: tuple[ConnectorPolicySource, ...] = ()
     metadata: Mapping[str, Any] | None = None
     source_kind: str = "database"
+    has_secret: bool = False
 
     @property
     def source_path(self) -> str:
@@ -58,7 +70,7 @@ class ConnectorCredential:
             return True
         # Environment references are deliberately unavailable to API-managed
         # credential rows. Legacy rows remain visible but fail closed.
-        return bool(self.secret_ref or self.password_value or self.token_value)
+        return bool(self.has_secret or self.secret_ref or self.password_value or self.token_value)
 
     def to_response(self) -> dict[str, Any]:
         return {
@@ -85,7 +97,159 @@ def list_database_connector_credentials(
     tenant_id: str,
     include_disabled: bool = False,
 ) -> list[ConnectorCredential]:
-    return [connector_credential_from_row(row) for row in list_connector_credential_rows(session, tenant_id=tenant_id, include_disabled=include_disabled)]
+    local = [
+        connector_credential_from_row(row)
+        for row in list_connector_credential_rows(
+            session,
+            tenant_id=tenant_id,
+            include_disabled=include_disabled,
+        )
+    ]
+    return [
+        *local,
+        *list_reusable_connector_credentials(
+            session,
+            tenant_id=tenant_id,
+            include_disabled=include_disabled,
+        ),
+    ]
+
+
+def reusable_credential_reference(credential_id: str) -> str:
+    return f"{CORE_CREDENTIAL_ENVELOPE_PREFIX}{credential_id}"
+
+
+def reusable_credential_id(credential_ref: str | None) -> str | None:
+    if not credential_ref or not credential_ref.startswith(CORE_CREDENTIAL_ENVELOPE_PREFIX):
+        return None
+    value = credential_ref.removeprefix(CORE_CREDENTIAL_ENVELOPE_PREFIX).strip()
+    return value or None
+
+
+def file_credential_context(
+    *,
+    tenant_id: str,
+    profile_id: str | None = None,
+    scope_type: str = "tenant",
+    scope_id: str | None = None,
+    administrative: bool = False,
+) -> CredentialAccessContext:
+    return CredentialAccessContext(
+        tenant_id=tenant_id,
+        user_id=scope_id if scope_type == "user" else None,
+        group_ids=frozenset({scope_id}) if scope_type == "group" and scope_id else frozenset(),
+        target_scope_type=scope_type,
+        target_scope_id=scope_id or tenant_id,
+        module_id="files",
+        server_ref=f"files:{profile_id}" if profile_id else None,
+        administrative=administrative,
+    )
+
+
+def list_reusable_connector_credentials(
+    session: Session,
+    *,
+    tenant_id: str,
+    include_disabled: bool = False,
+) -> list[ConnectorCredential]:
+    if not inspect(session.get_bind()).has_table(CredentialEnvelope.__tablename__):
+        return []
+    context = file_credential_context(tenant_id=tenant_id, administrative=True)
+    return [
+        connector_credential_from_envelope(row)
+        for row in list_credential_envelopes(
+            session,
+            context=context,
+            include_inactive=include_disabled,
+        )
+    ]
+
+
+def resolve_reusable_connector_credential(
+    session: Session,
+    *,
+    tenant_id: str,
+    credential_ref: str,
+    profile_id: str,
+    scope_type: str,
+    scope_id: str | None,
+) -> ConnectorCredential:
+    credential_id = reusable_credential_id(credential_ref)
+    if credential_id is None:
+        raise FileStorageError("Reusable credential reference is invalid")
+    try:
+        resolved = resolve_credential_envelope(
+            session,
+            credential_id=credential_id,
+            context=file_credential_context(
+                tenant_id=tenant_id,
+                profile_id=profile_id,
+                scope_type=scope_type,
+                scope_id=scope_id,
+            ),
+        )
+    except CredentialEnvelopeError as exc:
+        raise FileStorageError("Reusable credential is unavailable to this file connection") from exc
+    return connector_credential_from_resolved_envelope(
+        resolved,
+        scope_type=scope_type,
+        scope_id=scope_id,
+    )
+
+
+def connector_credential_from_envelope(row: CredentialEnvelope) -> ConnectorCredential:
+    return ConnectorCredential(
+        id=reusable_credential_reference(row.id),
+        label=row.name,
+        scope_type=row.scope_type,
+        scope_id=row.scope_id,
+        enabled=row.is_active,
+        credential_mode=_envelope_credential_mode(row.credential_kind, row.secret_keys),
+        username=_clean_public_value(row.public_data, "username"),
+        source_kind="credential_envelope",
+        has_secret=bool(row.secret_data_encrypted),
+        metadata={
+            "credential_envelope_id": row.id,
+            "credential_kind": row.credential_kind,
+            "allowed_modules": list(row.allowed_modules or []),
+            "allowed_server_refs": list(row.allowed_server_refs or []),
+            "inherit_to_lower_scopes": bool(row.inherit_to_lower_scopes),
+            "revision": row.revision,
+        },
+    )
+
+
+def connector_credential_from_resolved_envelope(
+    row: ResolvedCredentialEnvelope,
+    *,
+    scope_type: str,
+    scope_id: str | None,
+) -> ConnectorCredential:
+    return ConnectorCredential(
+        id=reusable_credential_reference(row.id),
+        label=row.name,
+        scope_type=scope_type,
+        scope_id=scope_id,
+        enabled=True,
+        credential_mode=_envelope_credential_mode(row.credential_kind, row.secret_data),
+        username=_clean_public_value(row.public_data, "username"),
+        password_value=_first_secret(row.secret_data, "password", "secret"),
+        token_value=_first_secret(
+            row.secret_data,
+            "access_token",
+            "bearer_token",
+            "token",
+            "api_key",
+        ),
+        source_kind="credential_envelope",
+        has_secret=bool(row.secret_data),
+        metadata={
+            "credential_envelope_id": row.id,
+            "credential_kind": row.credential_kind,
+            "inherit_to_lower_scopes": True,
+            "revision": row.revision,
+        },
+    )
 
 
 def list_connector_credential_rows(
@@ -348,6 +512,27 @@ def _policy_source_response(source: ConnectorPolicySource) -> dict[str, Any]:
     }
 
 
+def _envelope_credential_mode(kind: str, secret_values: Mapping[str, Any] | list[str]) -> str:
+    keys = {str(key) for key in secret_values}
+    if kind in {"token", "oauth2", "api_key"} or keys.intersection(
+        {"access_token", "bearer_token", "token", "api_key"}
+    ):
+        return "token"
+    return "basic"
+
+
+def _clean_public_value(values: Mapping[str, Any] | None, key: str) -> str | None:
+    return _clean((values or {}).get(key))
+
+
+def _first_secret(values: Mapping[str, Any], *keys: str) -> str | None:
+    for key in keys:
+        value = _clean(values.get(key))
+        if value is not None:
+            return value
+    return None
+
+
 def _clean(value: object) -> str | None:
     if value is None:
         return None
diff --git a/src/govoplan_files/backend/storage/connector_profile_store.py b/src/govoplan_files/backend/storage/connector_profile_store.py
index ca2d730..f29cb6b 100644
--- a/src/govoplan_files/backend/storage/connector_profile_store.py
+++ b/src/govoplan_files/backend/storage/connector_profile_store.py
@@ -10,7 +10,13 @@ from govoplan_core.security.secrets import decrypt_secret, encrypt_secret
 from govoplan_files.backend.db.models import FileConnectorCredential, FileConnectorProfile
 from govoplan_files.backend.storage.common import FileStorageError
 from govoplan_files.backend.storage.connector_deployment import reject_api_controlled_deployment_references
-from govoplan_files.backend.storage.connector_credential_store import connector_credential_from_row, credential_rows_by_id
+from govoplan_files.backend.storage.connector_credential_store import (
+    ConnectorCredential,
+    connector_credential_from_row,
+    credential_rows_by_id,
+    resolve_reusable_connector_credential,
+    reusable_credential_id,
+)
 from govoplan_files.backend.storage.connector_policy import connector_policy_sources_from_payload
 from govoplan_files.backend.storage.connector_profiles import ConnectorProfile, supported_connector_providers
 
@@ -50,10 +56,28 @@ def select_database_connector_profiles(
     profile_ids = {row.id for row in rows}
     if row_visible is not None:
         rows = [row for row in rows if row_visible(row)]
-    credential_ids = {_clean(row.credential_profile_id) for row in rows if _clean(row.credential_profile_id)}
+    credential_ids = {
+        _clean(row.credential_profile_id)
+        for row in rows
+        if _clean(row.credential_profile_id) and not reusable_credential_id(row.credential_profile_id)
+    }
     credentials = credential_rows_by_id(session, tenant_id=tenant_id, credential_ids={item for item in credential_ids if item}, include_disabled=include_disabled)
     return (
-        [connector_profile_from_row(row, credential_row=credentials.get(row.credential_profile_id or "")) for row in rows],
+        [
+            connector_profile_from_row(
+                row,
+                credential_row=(
+                    _resolve_profile_reusable_credential(
+                        session,
+                        tenant_id=tenant_id,
+                        row=row,
+                    )
+                    if reusable_credential_id(row.credential_profile_id)
+                    else credentials.get(row.credential_profile_id or "")
+                ),
+            )
+            for row in rows
+        ],
         profile_ids,
     )
 
@@ -73,7 +97,10 @@ def list_connector_profile_rows(
     return query.order_by(FileConnectorProfile.scope_type.asc(), FileConnectorProfile.label.asc()).all()
 
 
-def connector_profile_from_row(row: FileConnectorProfile, credential_row: FileConnectorCredential | None = None) -> ConnectorProfile:
+def connector_profile_from_row(
+    row: FileConnectorProfile,
+    credential_row: FileConnectorCredential | ConnectorCredential | None = None,
+) -> ConnectorProfile:
     policy_sources = []
     if row.policy:
         policy_sources = connector_policy_sources_from_payload({
@@ -82,9 +109,18 @@ def connector_profile_from_row(row: FileConnectorProfile, credential_row: FileCo
             "label": row.label,
             "policy": row.policy,
         })
-    credential = connector_credential_from_row(credential_row) if credential_row is not None else None
+    credential = (
+        credential_row
+        if isinstance(credential_row, ConnectorCredential)
+        else connector_credential_from_row(credential_row)
+        if credential_row is not None
+        else None
+    )
     if credential:
         policy_sources.extend(credential.policy_sources)
+    metadata = dict(row.metadata_ or {})
+    if reusable_credential_id(row.credential_profile_id) and credential is None:
+        metadata["credential_unavailable"] = True
     return ConnectorProfile(
         id=row.id,
         label=row.label,
@@ -105,11 +141,30 @@ def connector_profile_from_row(row: FileConnectorProfile, credential_row: FileCo
         token_value=credential.token_value if credential else decrypt_secret(row.token_encrypted),
         capabilities=tuple(_string_list(row.capabilities)),
         policy_sources=tuple(policy_sources),
-        metadata=dict(row.metadata_ or {}),
+        metadata=metadata,
         source_kind="database",
     )
 
 
+def _resolve_profile_reusable_credential(
+    session: Session,
+    *,
+    tenant_id: str,
+    row: FileConnectorProfile,
+) -> ConnectorCredential | None:
+    try:
+        return resolve_reusable_connector_credential(
+            session,
+            tenant_id=tenant_id,
+            credential_ref=row.credential_profile_id or "",
+            profile_id=row.id,
+            scope_type=row.scope_type,
+            scope_id=row.scope_id,
+        )
+    except FileStorageError:
+        return None
+
+
 def get_connector_profile_row(
     session: Session,
     *,
diff --git a/tests/test_connector_profile_store.py b/tests/test_connector_profile_store.py
index f6c76b2..fca0415 100644
--- a/tests/test_connector_profile_store.py
+++ b/tests/test_connector_profile_store.py
@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+import json
 import unittest
 from unittest.mock import patch
 
@@ -8,6 +9,7 @@ from sqlalchemy.orm import sessionmaker
 
 from govoplan_access.backend.db import models as access_models  # noqa: F401 - resolve Files user foreign keys
 from govoplan_core.db.base import Base
+from govoplan_core.security.credential_envelopes import CredentialEnvelope
 from govoplan_core.security.secrets import decrypt_secret, encrypt_secret
 from govoplan_files.backend.db.models import FileConnectorProfile
 from govoplan_files.backend.storage.common import FileStorageError
@@ -20,7 +22,13 @@ from govoplan_files.backend.storage.connector_profile_store import (
 class ConnectorProfileStoreUpdateTests(unittest.TestCase):
     def setUp(self) -> None:
         self.engine = create_engine("sqlite:///:memory:")
-        Base.metadata.create_all(self.engine, tables=[FileConnectorProfile.__table__])
+        Base.metadata.create_all(
+            self.engine,
+            tables=[
+                FileConnectorProfile.__table__,
+                CredentialEnvelope.__table__,
+            ],
+        )
         self.session = sessionmaker(bind=self.engine)()
         self.row = FileConnectorProfile(
             id="profile-1",
@@ -171,6 +179,50 @@ class ConnectorProfileStoreUpdateTests(unittest.TestCase):
         self.assertEqual([self.row.id], [profile.id for profile in profiles])
         self.assertEqual("original-password", profiles[0].password_value)
 
+    def test_reusable_credential_resolves_and_revocation_keeps_profile_visible(self) -> None:
+        credential = CredentialEnvelope(
+            id="shared-credential",
+            tenant_id="tenant-1",
+            scope_type="tenant",
+            scope_id="tenant-1",
+            name="Shared WebDAV login",
+            credential_kind="username_password",
+            public_data={"username": "ada"},
+            secret_data_encrypted=encrypt_secret(json.dumps({"password": "secret"})),
+            secret_keys=["password"],
+            allowed_modules=["files"],
+            allowed_server_refs=[],
+            inherit_to_lower_scopes=True,
+            is_active=True,
+            revision="revision-1",
+        )
+        self.row.credential_profile_id = "credential-envelope:shared-credential"
+        self.row.username = None
+        self.row.password_encrypted = None
+        self.row.token_encrypted = None
+        self.session.add(credential)
+        self.session.commit()
+
+        profile = list_database_connector_profiles(
+            self.session,
+            tenant_id="tenant-1",
+        )[0]
+
+        self.assertEqual("ada", profile.username)
+        self.assertEqual("secret", profile.password_value)
+        self.assertTrue(profile.credentials_configured)
+
+        credential.is_active = False
+        self.session.commit()
+        profile = list_database_connector_profiles(
+            self.session,
+            tenant_id="tenant-1",
+        )[0]
+
+        self.assertIsNone(profile.password_value)
+        self.assertFalse(profile.credentials_configured)
+        self.assertTrue(profile.metadata["credential_unavailable"])
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/webui/src/features/files/FileConnectorSettingsPanel.tsx b/webui/src/features/files/FileConnectorSettingsPanel.tsx
index 835a273..833611a 100644
--- a/webui/src/features/files/FileConnectorSettingsPanel.tsx
+++ b/webui/src/features/files/FileConnectorSettingsPanel.tsx
@@ -225,6 +225,14 @@ export default function FileConnectorSettingsPanel({
     () => credentials.filter((credential) => connectorBelongsToEditableScope(credential, scopeType, activeScopeId)),
     [activeScopeId, credentials, scopeType]
   );
+  const selectableCredentials = useMemo(
+    () => credentials.filter((credential) =>
+      connectorBelongsToEditableScope(credential, scopeType, activeScopeId) ||
+      credential.source_kind === "credential_envelope" &&
+      reusableCredentialAvailableAtScope(credential, scopeType, activeScopeId)
+    ),
+    [activeScopeId, credentials, scopeType]
+  );
 
   useEffect(() => {
     resetDeltaWatermark(deltaKey);
@@ -424,7 +432,7 @@ export default function FileConnectorSettingsPanel({
       endpoint_url: cleanOrNull(draft.endpointUrl),
       base_path: cleanOrNull(draft.basePath),
       enabled: draft.enabled,
-      credential_profile_id: cleanOrNull(credentialProfileIdForDraft(draft, scopedCredentials)),
+      credential_profile_id: cleanOrNull(credentialProfileIdForDraft(draft, selectableCredentials)),
       credential_mode: draft.credentialMode,
       capabilities,
       policy: policyFromDraft(draft),
@@ -694,7 +702,7 @@ export default function FileConnectorSettingsPanel({
   const panelTitle = title ?? i18nMessage("i18n:govoplan-files.value_file_connections", { value0: scopeLabel(scopeType) });
   const selectedCredentialIds = new Set(scopedProfiles.map((profile) => profile.credential_profile_id).filter((value): value is string => Boolean(value)));
   const firstCompatibleProfileByCredential = new Map<string, string>();
-  for (const credential of scopedCredentials) {
+  for (const credential of selectableCredentials) {
     const selectedProfile = scopedProfiles.find((profile) => profile.credential_profile_id === credential.id);
     const fallbackProfile = selectedProfile ?? scopedProfiles.find((profile) => !selectedCredentialIds.has(credential.id) && credentialMatchesProfile(credential, profile));
     if (fallbackProfile) firstCompatibleProfileByCredential.set(credential.id, fallbackProfile.id);
@@ -717,8 +725,8 @@ export default function FileConnectorSettingsPanel({
   const credentialTestUnsupported = Boolean(credentialTestProfile && credentialTestProfile.provider !== "webdav" && credentialTestProfile.provider !== "nextcloud");
   const credentialTestDisabled = !credentialDraft || saving || testingCredentialLogin || !credentialTestProfile || credentialTestUnsupported;
   const credentialTestTooltip = credentialTestHelpText(credentialTestProfile, credentialTestUnsupported);
-  const profileCredentialOptions = draft ? credentialOptionsForProfileDraft(scopedCredentials, draft) : [];
-  const profileCredentialSelectValue = draft ? credentialProfileIdForDraft(draft, scopedCredentials) : "";
+  const profileCredentialOptions = draft ? credentialOptionsForProfileDraft(selectableCredentials, draft) : [];
+  const profileCredentialSelectValue = draft ? credentialProfileIdForDraft(draft, selectableCredentials) : "";
   const connectorColumns: ConnectionTreeColumn<ConnectorTreeRow>[] = [
   {
     id: "connection",
@@ -755,7 +763,7 @@ export default function FileConnectorSettingsPanel({
 
   function connectorChildren(row: ConnectorTreeRow): ConnectorTreeRow[] {
     if (row.kind !== "profile") return [];
-    return scopedCredentials.
+    return selectableCredentials.
     filter((credential) => firstCompatibleProfileByCredential.get(credential.id) === row.profile.id).
     map((credential) => ({ kind: "credential" as const, id: `credential:${row.profile.id}:${credential.id}`, credential, profile: row.profile }));
   }
@@ -1432,10 +1440,39 @@ function connectorCredentialDraftKey(draft: ConnectorCredentialDraft): string {
 function credentialOptionsForProfileDraft(credentials: FileConnectorCredential[], draft: ConnectorProfileDraft): FileConnectorCredential[] {
   return credentials.filter((credential) =>
     credential.id === draft.credentialProfileId ||
-    credential.enabled && (!credential.provider || credential.provider === draft.provider)
+    credential.enabled &&
+    (!credential.provider || credential.provider === draft.provider) &&
+    reusableCredentialAllowsProfile(credential, draft.id)
   );
 }
 
+function reusableCredentialAvailableAtScope(
+  credential: FileConnectorCredential,
+  scopeType: ConnectorScope,
+  scopeId: string | null
+): boolean {
+  if (connectorBelongsToEditableScope(credential, scopeType, scopeId)) return true;
+  if (credential.source_kind !== "credential_envelope") return false;
+  const inherited = credential.metadata?.inherit_to_lower_scopes === true;
+  if (!inherited) return false;
+  if (credential.scope_type === "system") return scopeType !== "system";
+  if (credential.scope_type === "tenant") {
+    return scopeType === "group" || scopeType === "user";
+  }
+  return false;
+}
+
+function reusableCredentialAllowsProfile(
+  credential: FileConnectorCredential,
+  profileId: string
+): boolean {
+  if (credential.source_kind !== "credential_envelope") return true;
+  const refs = Array.isArray(credential.metadata?.allowed_server_refs)
+    ? credential.metadata.allowed_server_refs.filter((value): value is string => typeof value === "string")
+    : [];
+  return refs.length === 0 || refs.includes(`files:${profileId}`);
+}
+
 function credentialProfileIdForDraft(draft: ConnectorProfileDraft, credentials: FileConnectorCredential[]): string {
   const options = credentialOptionsForProfileDraft(credentials, draft);
   if (draft.credentialProfileId && options.some((credential) => credential.id === draft.credentialProfileId)) {