diff --git a/client/src/pages/admin-test-checklist/ui/AdminTestChecklistPage.tsx b/client/src/pages/admin-test-checklist/ui/AdminTestChecklistPage.tsx
index c9d0f2d..f5207f5 100644
--- a/client/src/pages/admin-test-checklist/ui/AdminTestChecklistPage.tsx
+++ b/client/src/pages/admin-test-checklist/ui/AdminTestChecklistPage.tsx
@@ -1,17 +1,16 @@
-import { useMemo, useState } from 'react'
+import { useCallback, useMemo, useState } from 'react'
 import Alert from '@mui/material/Alert'
 import Accordion from '@mui/material/Accordion'
 import AccordionDetails from '@mui/material/AccordionDetails'
 import AccordionSummary from '@mui/material/AccordionSummary'
 import Box from '@mui/material/Box'
 import Button from '@mui/material/Button'
-import Checkbox from '@mui/material/Checkbox'
 import CircularProgress from '@mui/material/CircularProgress'
 import Dialog from '@mui/material/Dialog'
 import DialogActions from '@mui/material/DialogActions'
 import DialogContent from '@mui/material/DialogContent'
-import DialogContentText from '@mui/material/DialogContentText'
 import DialogTitle from '@mui/material/DialogTitle'
+import IconButton from '@mui/material/IconButton'
 import Stack from '@mui/material/Stack'
 import Table from '@mui/material/Table'
 import TableBody from '@mui/material/TableBody'
@@ -19,7 +18,11 @@ import TableCell from '@mui/material/TableCell'
 import TableContainer from '@mui/material/TableContainer'
 import TableHead from '@mui/material/TableHead'
 import TableRow from '@mui/material/TableRow'
+import TextField from '@mui/material/TextField'
+import Tooltip from '@mui/material/Tooltip'
 import Typography from '@mui/material/Typography'
+import CheckCircleIcon from '@mui/icons-material/CheckCircle'
+import CancelIcon from '@mui/icons-material/Cancel'
 import ExpandMoreIcon from '@mui/icons-material/ExpandMore'
 import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query'
 import { TEST_CHECKLIST_ITEMS } from '@shared/constants/test-checklist-items'
@@ -29,6 +32,13 @@ import {
   updateTestChecklistItem,
 } from '@/entities/test-checklist/api/test-checklist-api'
 
+type Status = 'passed' | 'failed' | 'unchecked'
+
+function statusFromResult(r: { passed: boolean; comment: string | null } | undefined): Status {
+  if (!r) return 'unchecked'
+  return r.passed ? 'passed' : 'failed'
+}
+
 function formatDate(iso: string): string {
   return new Date(iso).toLocaleString('ru-RU', {
     day: '2-digit',
@@ -39,10 +49,30 @@ function formatDate(iso: string): string {
   })
 }
 
+function StatusIcon({ status, onClick }: { status: Status; onClick: () => void }) {
+  const icons = {
+    passed: <CheckCircleIcon sx={{ color: 'success.main' }} />,
+    failed: <CancelIcon sx={{ color: 'error.main' }} />,
+    unchecked: <Box sx={{ width: 24, height: 24, borderRadius: '50%', border: 2, borderColor: 'action.disabled' }} />,
+  }
+
+  return (
+    <Tooltip title={status === 'passed' ? 'Пройдено' : status === 'failed' ? 'Не пройдено' : 'Не проверено'}>
+      <IconButton size="small" onClick={onClick} sx={{ p: 0.5 }}>
+        {icons[status]}
+      </IconButton>
+    </Tooltip>
+  )
+}
+
 export function AdminTestChecklistPage() {
   const queryClient = useQueryClient()
   const [confirmOpen, setConfirmOpen] = useState(false)
   const [expanded, setExpanded] = useState<string | false>(false)
+  const [errorDialogOpen, setErrorDialogOpen] = useState(false)
+  const [errorItemKey, setErrorItemKey] = useState<string | null>(null)
+  const [errorComment, setErrorComment] = useState('')
+  const [errorCommentError, setErrorCommentError] = useState(false)
 
   const { data, isLoading, isError } = useQuery({
     queryKey: ['admin', 'test-checklist'],
@@ -50,7 +80,8 @@ export function AdminTestChecklistPage() {
   })
 
   const updateMutation = useMutation({
-    mutationFn: ({ itemKey, passed }: { itemKey: string; passed: boolean }) => updateTestChecklistItem(itemKey, passed),
+    mutationFn: ({ itemKey, passed, comment }: { itemKey: string; passed: boolean; comment?: string | null }) =>
+      updateTestChecklistItem(itemKey, passed, comment),
     onSuccess: () => {
       queryClient.invalidateQueries({ queryKey: ['admin', 'test-checklist'] })
     },
@@ -79,6 +110,40 @@ export function AdminTestChecklistPage() {
   const total = TEST_CHECKLIST_ITEMS.length
   const passedCount = TEST_CHECKLIST_ITEMS.filter((i) => results[i.key]?.passed).length
 
+  const handleStatusClick = useCallback(
+    (itemKey: string) => {
+      const current = statusFromResult(results[itemKey])
+      if (current === 'failed') {
+        // Clicking on failed → reset to unchecked
+        updateMutation.mutate({ itemKey, passed: false, comment: null })
+      } else if (current === 'unchecked') {
+        // Clicking on unchecked → mark as passed
+        updateMutation.mutate({ itemKey, passed: true })
+      } else {
+        // Clicking on passed → open error dialog
+        setErrorItemKey(itemKey)
+        setErrorComment('')
+        setErrorCommentError(false)
+        setErrorDialogOpen(true)
+      }
+    },
+    [results, updateMutation],
+  )
+
+  const handleSaveError = () => {
+    if (!errorItemKey) return
+    if (!errorComment.trim()) {
+      setErrorCommentError(true)
+      return
+    }
+    updateMutation.mutate({ itemKey: errorItemKey, passed: false, comment: errorComment.trim() })
+    setErrorDialogOpen(false)
+    setErrorItemKey(null)
+    setErrorComment('')
+  }
+
+  const errorItem = errorItemKey ? TEST_CHECKLIST_ITEMS.find((i) => i.key === errorItemKey) : null
+
   return (
     <Box>
       <Stack direction="row" sx={{ mb: 3, justifyContent: 'space-between', alignItems: 'center' }}>
@@ -121,26 +186,46 @@ export function AdminTestChecklistPage() {
                 <Table size="small">
                   <TableHead>
                     <TableRow>
-                      <TableCell padding="checkbox" sx={{ width: 56 }} />
+                      <TableCell sx={{ width: 56 }} />
                       <TableCell sx={{ fontWeight: 600 }}>Действие</TableCell>
                       <TableCell sx={{ fontWeight: 600 }}>Ожидаемый результат</TableCell>
+                      <TableCell sx={{ fontWeight: 600 }}>Комментарий</TableCell>
                       <TableCell sx={{ fontWeight: 600, whiteSpace: 'nowrap' }}>Дата проверки</TableCell>
                     </TableRow>
                   </TableHead>
                   <TableBody>
                     {items.map((item) => {
                       const r = results[item.key]
+                      const status = statusFromResult(r)
                       return (
                         <TableRow key={item.key} hover>
-                          <TableCell padding="checkbox">
-                            <Checkbox
-                              checked={r?.passed ?? false}
-                              onChange={(_, checked) => updateMutation.mutate({ itemKey: item.key, passed: checked })}
-                              color="success"
-                            />
+                          <TableCell>
+                            <StatusIcon status={status} onClick={() => handleStatusClick(item.key)} />
                           </TableCell>
                           <TableCell>{item.action}</TableCell>
                           <TableCell>{item.expectedResult}</TableCell>
+                          <TableCell sx={{ maxWidth: 200 }}>
+                            {r?.comment ? (
+                              <Tooltip title={r.comment} arrow>
+                                <Typography
+                                  variant="body2"
+                                  color="error.main"
+                                  sx={{
+                                    overflow: 'hidden',
+                                    textOverflow: 'ellipsis',
+                                    whiteSpace: 'nowrap',
+                                    cursor: 'pointer',
+                                  }}
+                                >
+                                  {r.comment}
+                                </Typography>
+                              </Tooltip>
+                            ) : (
+                              <Typography variant="body2" color="text.disabled">
+                                —
+                              </Typography>
+                            )}
+                          </TableCell>
                           <TableCell sx={{ whiteSpace: 'nowrap', color: r ? 'text.primary' : 'text.disabled' }}>
                             {r ? formatDate(r.checkedAt) : '—'}
                           </TableCell>
@@ -158,7 +243,7 @@ export function AdminTestChecklistPage() {
       <Dialog open={confirmOpen} onClose={() => setConfirmOpen(false)}>
         <DialogTitle>Сбросить все проверки?</DialogTitle>
         <DialogContent>
-          <DialogContentText>Все отметки будут удалены. Это действие нельзя отменить.</DialogContentText>
+          <Typography>Все отметки будут удалены. Это действие нельзя отменить.</Typography>
         </DialogContent>
         <DialogActions>
           <Button onClick={() => setConfirmOpen(false)}>Отмена</Button>
@@ -167,6 +252,35 @@ export function AdminTestChecklistPage() {
           </Button>
         </DialogActions>
       </Dialog>
+
+      <Dialog open={errorDialogOpen} onClose={() => setErrorDialogOpen(false)} maxWidth="sm" fullWidth>
+        <DialogTitle>
+          Описание ошибки — {errorItem?.action}
+        </DialogTitle>
+        <DialogContent>
+          <TextField
+            autoFocus
+            fullWidth
+            multiline
+            rows={4}
+            value={errorComment}
+            onChange={(e) => {
+              setErrorComment(e.target.value)
+              if (errorCommentError) setErrorCommentError(false)
+            }}
+            placeholder="Опишите, что пошло не так..."
+            error={errorCommentError}
+            helperText={errorCommentError ? 'Обязательное поле' : ''}
+            sx={{ mt: 1 }}
+          />
+        </DialogContent>
+        <DialogActions>
+          <Button onClick={() => setErrorDialogOpen(false)}>Отмена</Button>
+          <Button color="error" onClick={handleSaveError}>
+            Сохранить
+          </Button>
+        </DialogActions>
+      </Dialog>
     </Box>
   )
 }