diff --git a/refresh-service.js b/refresh-service.js
index dc5ea93..940a398 100644
--- a/refresh-service.js
+++ b/refresh-service.js
@@ -608,39 +608,92 @@ function createRefreshService({ db, fetch, getSettings, sseBroadcast, logger = c
     return dayKeyNow !== dayKeyLast;
   }
 
+  function firstDefined(obj, keys) {
+    for (const key of keys) {
+      const value = obj?.[key];
+      if (value !== undefined && value !== null && String(value).trim() !== '') return value;
+    }
+    return null;
+  }
+
+  function extractClientUserRecord(raw) {
+    const userId = firstDefined(raw, ['userId', 'userid', 'user_id', 'id']);
+    const name = String(firstDefined(raw, ['name', 'fullName', 'fullname', 'displayName', 'username']) || '').trim();
+
+    const groupIds = new Set();
+    const pushGroup = (value) => {
+      if (value === undefined || value === null) return;
+      const normalized = String(value).trim();
+      if (normalized) groupIds.add(normalized);
+    };
+
+    pushGroup(firstDefined(raw, ['userGroupId', 'usergroupid', 'user_group_id', 'groupId', 'group_id']));
+
+    for (const bucketName of ['groups', 'userGroups']) {
+      const bucket = raw?.[bucketName];
+      if (!Array.isArray(bucket)) continue;
+      for (const group of bucket) {
+        pushGroup(firstDefined(group, ['userGroupId', 'usergroupid', 'groupId', 'group_id', 'id']));
+      }
+    }
+
+    return {
+      userId: userId === null ? '' : String(userId).trim(),
+      name,
+      groupIds: [...groupIds],
+    };
+  }
+
   async function syncClientUsers() {
     const s = getSettings();
-    if (!s.api_key) return;
-    const pageSize = 100;
+    if (!s.api_key) return { fetched: 0, stored: 0, odata_count: null };
+    const pageSize = 400;
     let skip = 0;
-    const allUsers = [];
+    let odataCount = null;
+    const sourceRows = [];
     while (true) {
-      const url = `https://apigw.intradesk.ru/settings/odata/v2/Clients?ApiKey=${s.api_key}`
+      const url = `https://apigw.intradesk.ru/settings/odata/ClientUsers?ApiKey=${s.api_key}`
+        + `&$count=true`
+        + `&$orderby=${encodeURIComponent('id desc')}`
         + `&$filter=${encodeURIComponent('(isarchived eq false)')}`
         + `&$top=${pageSize}&$skip=${skip}`;
       const response = await fetch(url, { timeout: 30000 });
-      if (!response.ok) break;
+      if (!response.ok) {
+        const body = await response.text().catch(() => '');
+        throw new Error(`ClientUsers request failed (${response.status}): ${body.slice(0, 180)}`);
+      }
       const json = await response.json();
-      const users = json.value || [];
-      allUsers.push(...users);
-      if (users.length < pageSize) break;
+      const rows = Array.isArray(json?.value) ? json.value : [];
+      if (odataCount === null && Number.isFinite(Number(json?.['@odata.count']))) {
+        odataCount = Number(json['@odata.count']);
+      }
+      sourceRows.push(...rows);
+      if (rows.length < pageSize) break;
       skip += pageSize;
     }
-    if (!allUsers.length) return;
+
+    const memberships = [];
+    const seenMemberships = new Set();
+    for (const raw of sourceRows) {
+      const parsed = extractClientUserRecord(raw || {});
+      if (!parsed.userId || !parsed.name || !parsed.groupIds.length) continue;
+      for (const groupId of parsed.groupIds) {
+        const dedupeKey = `${parsed.userId}|${groupId}`;
+        if (seenMemberships.has(dedupeKey)) continue;
+        seenMemberships.add(dedupeKey);
+        memberships.push({ userId: parsed.userId, name: parsed.name, groupId });
+      }
+    }
+
     const tx = db.transaction(() => {
       stmts.clearClientUsers.run();
-      for (const u of allUsers) {
-        const name = String(u.name || '').trim();
-        if (!name || !u.id) continue;
-        for (const g of (u.groups || [])) {
-          if (g.userGroupId) {
-            stmts.upsertClientUser.run(u.id, name, g.userGroupId);
-          }
-        }
+      for (const row of memberships) {
+        stmts.upsertClientUser.run(row.userId, row.name, row.groupId);
       }
     });
     tx();
-    logger.log(`[Refresh] syncClientUsers: stored ${allUsers.length} users`);
+    logger.log(`[Refresh] syncClientUsers: fetched ${sourceRows.length}, stored ${memberships.length}${odataCount !== null ? `, odata.count=${odataCount}` : ''}`);
+    return { fetched: sourceRows.length, stored: memberships.length, odata_count: odataCount };
   }
 
   let running = false;
diff --git a/server.js b/server.js
index 0f7d375..d5c3695 100644
--- a/server.js
+++ b/server.js
@@ -542,9 +542,17 @@ app.get('/api/client-users', auth, (req, res) => {
 
 app.post('/api/admin/sync-client-users', auth, adminOnly, (req, res) => {
   refreshService.syncClientUsers()
-    .then(() => {
+    .then((syncMeta = {}) => {
       const count = db.prepare('SELECT COUNT(*) as c FROM client_users').get();
-      res.json({ ok: true, count: count.c });
+      res.json({
+        ok: true,
+        count: count.c,
+        fetched: Number(syncMeta.fetched || 0),
+        stored: Number(syncMeta.stored || 0),
+        odata_count: syncMeta.odata_count !== null && syncMeta.odata_count !== undefined
+          ? Number(syncMeta.odata_count)
+          : null,
+      });
     })
     .catch((e) => res.status(500).json({ error: e.message }));
 });