diff --git a/src/js/components/ManageMenu/CommunityCloud/CloudSnippetsTable.tsx b/src/js/components/ManageMenu/CommunityCloud/CloudSnippetsTable.tsx
index 5539a8197..8d78dec74 100644
--- a/src/js/components/ManageMenu/CommunityCloud/CloudSnippetsTable.tsx
+++ b/src/js/components/ManageMenu/CommunityCloud/CloudSnippetsTable.tsx
@@ -64,46 +64,77 @@ interface TableHeadingCheckboxProps {
 	setSelectedIds: Dispatch<SetStateAction<Set<CloudSnippetSchema['id']>>>
 }
 
+/**
+ * Selects every snippet on the page that can be downloaded. With nothing
+ * downloadable the box is disabled and unticked: "all of nothing" must not
+ * read as a selection.
+ */
 const TableHeadingCheckbox: React.FC<TableHeadingCheckboxProps> = ({ availableIds, selectedIds, setSelectedIds }) =>
 	<td className="column-cb check-column">
 		<input
 			id="cb-select-all-cloud-snippets"
 			type="checkbox"
-			checked={availableIds.every(snippetId => selectedIds.has(snippetId))}
+			checked={0 < availableIds.length && availableIds.every(snippetId => selectedIds.has(snippetId))}
+			disabled={0 === availableIds.length}
+			title={0 === availableIds.length ? __('Nothing on this page can be downloaded.', 'code-snippets') : undefined}
 			onChange={event =>
 				setSelectedIds(previous =>
 					new Set(event.target.checked
 						? [...previous, ...availableIds]
 						: [...previous].filter(snippetId => !availableIds.includes(snippetId)))
 				)}
-			aria-label={__('Select all snippets', 'code-snippets')}
+			aria-label={__('Select all downloadable snippets', 'code-snippets')}
 		/>
 	</td>
 
+/** Why a snippet cannot be selected for download, or undefined when it can. */
+const unavailableReason = (snippet: CloudSnippetSchema): string | undefined => {
+	if (snippet.local_id) {
+		return __('Already in your library.', 'code-snippets')
+	}
+
+	return isCloudSnippetDownloadable(snippet)
+		? undefined
+		: __('Requires Code Snippets Pro.', 'code-snippets')
+}
+
 interface TableRowCheckboxProps {
 	snippet: CloudSnippetSchema
 	selected: Set<CloudSnippetSchema['id']>
 	setSelected: Dispatch<SetStateAction<Set<CloudSnippetSchema['id']>>>
 }
 
-const TableRowCheckbox: React.FC<TableRowCheckboxProps> = ({ snippet, selected, setSelected }) =>
-	<th scope="row" className="check-column">
-		{isCloudSnippetDownloadable(snippet) && (
+/**
+ * Every row shows a box, so the column reads as one control: a snippet that
+ * cannot be downloaded gets a disabled box that says why.
+ */
+const TableRowCheckbox: React.FC<TableRowCheckboxProps> = ({ snippet, selected, setSelected }) => {
+	const reason = unavailableReason(snippet)
+
+	return (
+		<th scope="row" className="check-column">
 			<input
 				id={`cb-select-${snippet.id}`}
 				type="checkbox"
 				name="checked[]"
-				checked={selected.has(snippet.id)}
-				// translators: %s: snippet name.
-				aria-label={sprintf(__('Select %s', 'code-snippets'), snippet.name)}
+				checked={!reason && selected.has(snippet.id)}
+				disabled={!!reason}
+				title={reason}
+				aria-label={reason
+					// translators: 1: snippet name, 2: why it cannot be selected.
+					? sprintf(__('%1$s cannot be selected: %2$s', 'code-snippets'), snippet.name, reason)
+					// translators: %s: snippet name.
+					: sprintf(__('Select %s', 'code-snippets'), snippet.name)}
 				onChange={event =>
 					setSelected(previous =>
 						new Set(event.target.checked
 							? [...previous, snippet.id]
 							: [...previous].filter(snippetId => snippetId !== snippet.id))
 					)}
-			/>)}
-	</th>
+			/>
+		</th>
+	)
+}
 
 export interface CloudSnippetsTableProps {
 	snippets: CloudSnippetSchema[]
diff --git a/tests/e2e/cloud-download-eligibility.spec.ts b/tests/e2e/cloud-download-eligibility.spec.ts
index 8d9eecc0d..32b91b0e1 100644
--- a/tests/e2e/cloud-download-eligibility.spec.ts
+++ b/tests/e2e/cloud-download-eligibility.spec.ts
@@ -87,11 +87,15 @@ test.describe('Cloud bulk download eligibility', () => {
 
 		const table = page.locator('.cloud-snippets-table')
 		await expect(table.getByRole('checkbox', { name: 'Select Eligible Alpha' })).toBeVisible()
-		await expect(table.getByRole('checkbox', { name: 'Select Linked Beta' })).toHaveCount(0)
-		await expect(table.getByRole('checkbox', { name: 'Select Pro Gamma' })).toHaveCount(0)
+		// Rows that cannot be downloaded keep a box, disabled, that says why.
+		await expect(table.getByRole('checkbox', { name: 'Linked Beta cannot be selected: Already in your library.' })).toBeDisabled()
+		await expect(table.getByRole('checkbox', { name: 'Pro Gamma cannot be selected: Requires Code Snippets Pro.' })).toBeDisabled()
 
-		await table.getByRole('checkbox', { name: 'Select all snippets' }).check()
+		const selectAll = table.getByRole('checkbox', { name: 'Select all downloadable snippets' })
+		await expect(selectAll).not.toBeChecked()
+		await selectAll.check()
 		await expect(table.getByRole('checkbox', { name: 'Select Eligible Alpha' })).toBeChecked()
+		await expect(table.getByRole('checkbox', { name: 'Linked Beta cannot be selected: Already in your library.' })).not.toBeChecked()
 
 		await applyBulkDownload(page)
 		await expect.poll(() => state.downloads).toEqual([ELIGIBLE.id])
@@ -123,13 +127,34 @@ test.describe('Cloud bulk download eligibility', () => {
 
 		const table = page.locator('.cloud-snippets-table')
 		await expect(table.getByRole('checkbox', { name: 'Select Pro Gamma' })).toBeVisible()
-		await expect(table.getByRole('checkbox', { name: 'Select Linked Beta' })).toHaveCount(0)
+		await expect(table.getByRole('checkbox', { name: 'Linked Beta cannot be selected: Already in your library.' })).toBeDisabled()
 
-		await table.getByRole('checkbox', { name: 'Select all snippets' }).check()
+		await table.getByRole('checkbox', { name: 'Select all downloadable snippets' }).check()
 		await applyBulkDownload(page)
 		await expect.poll(() => [...state.downloads].sort((a, b) => a - b)).toEqual([ELIGIBLE.id, PRO_LOCKED.id])
 	})
 
+	test('a page with nothing downloadable offers no selection at all', async ({ page }) => {
+		const state: CloudRoutesState = {
+			snippets: [
+				cloudSnippet({ id: 201, name: 'Owned One', local_id: 11 }),
+				cloudSnippet({ id: 202, name: 'Owned Two', local_id: 12 })
+			],
+			downloads: []
+		}
+		await forceLicenseState(page, true)
+		await routeCloudSnippets(page, state)
+		await openCommunityCloud(page, 'table')
+
+		const table = page.locator('.cloud-snippets-table')
+		const selectAll = table.getByRole('checkbox', { name: 'Select all downloadable snippets' })
+		// "All of nothing" must not read as a selection: the header box is unticked and disabled.
+		await expect(selectAll).toBeDisabled()
+		await expect(selectAll).not.toBeChecked()
+		await expect(table.getByRole('checkbox', { name: 'Owned One cannot be selected: Already in your library.' })).toBeDisabled()
+		await expect(table.getByRole('checkbox', { name: 'Owned Two cannot be selected: Already in your library.' })).toBeDisabled()
+	})
+
 	test('selections hidden by a new search are not downloaded', async ({ page }) => {
 		const state: CloudRoutesState = { snippets: [ELIGIBLE, LINKED, PRO_LOCKED], downloads: [] }
 		await forceLicenseState(page, false)
diff --git a/tests/e2e/code-snippets-community-featured.spec.ts b/tests/e2e/code-snippets-community-featured.spec.ts
index 1087e7c74..92c2d3bac 100644
--- a/tests/e2e/code-snippets-community-featured.spec.ts
+++ b/tests/e2e/code-snippets-community-featured.spec.ts
@@ -262,7 +262,7 @@ test.describe('Community Cloud Featured Snippets', () => {
 		const table = page.locator('.cloud-snippets-table')
 		await expect(table).toBeVisible({ timeout: TIMEOUTS.DEFAULT })
 
-		const headerCheckbox = table.locator('thead').getByRole('checkbox', { name: 'Select all snippets' })
+		const headerCheckbox = table.locator('thead').getByRole('checkbox', { name: 'Select all downloadable snippets' })
 		const rowCheckbox = table.locator('tbody').getByRole('checkbox', { name: 'Select Mock Cloud Snippet' })
 
 		// The table owns the only select-all control; the toolbar checkbox is