diff --git a/packages/desktop-client/src/components/modals/EditAccess.tsx b/packages/desktop-client/src/components/modals/EditAccess.tsx
index aaef96cfb3d..02d595714a9 100644
--- a/packages/desktop-client/src/components/modals/EditAccess.tsx
+++ b/packages/desktop-client/src/components/modals/EditAccess.tsx
@@ -4,7 +4,6 @@ import { Trans, useTranslation } from 'react-i18next';
 import { addNotification, popModal, signOut } from 'loot-core/client/actions';
 import { send } from 'loot-core/platform/client/fetch';
 import { getUserAccessErrors } from 'loot-core/shared/errors';
-import { type Handlers } from 'loot-core/types/handlers';
 import { type UserAccessEntity } from 'loot-core/types/models/userAccess';
 
 import { useDispatch } from '../../redux';
@@ -34,22 +33,20 @@ export function EditUserAccess({
   const [availableUsers, setAvailableUsers] = useState<[string, string][]>([]);
 
   useEffect(() => {
-    send('access-get-available-users', defaultUserAccess.fileId).then(
-      (data: Awaited<ReturnType<Handlers['access-get-available-users']>>) => {
-        if ('error' in data) {
-          setSetError(data.error);
-        } else {
-          setAvailableUsers(
-            data.map(user => [
-              user.userId,
-              user.displayName
-                ? `${user.displayName} (${user.userName})`
-                : user.userName,
-            ]),
-          );
-        }
-      },
-    );
+    send('access-get-available-users', defaultUserAccess.fileId).then(data => {
+      if ('error' in data) {
+        setSetError(data.error);
+      } else {
+        setAvailableUsers(
+          data.map(user => [
+            user.userId,
+            user.displayName
+              ? `${user.displayName} (${user.userName})`
+              : user.userName,
+          ]),
+        );
+      }
+    });
   }, [defaultUserAccess.fileId]);
 
   async function onSave(close: () => void) {
diff --git a/packages/loot-core/src/platform/client/fetch/index.browser.ts b/packages/loot-core/src/platform/client/fetch/index.browser.ts
index 0a7f0d0569a..defc478021d 100644
--- a/packages/loot-core/src/platform/client/fetch/index.browser.ts
+++ b/packages/loot-core/src/platform/client/fetch/index.browser.ts
@@ -151,10 +151,9 @@ export const init: T.Init = async function (worker) {
 };
 
 export const send: T.Send = function (
-  name,
-  args,
-  { catchErrors = false } = {},
-) {
+  ...params: Parameters<T.Send>
+): ReturnType<T.Send> {
+  const [name, args, { catchErrors = false } = {}] = params;
   return new Promise((resolve, reject) => {
     const id = uuidv4();
 
@@ -171,8 +170,7 @@ export const send: T.Send = function (
     } else {
       globalWorker.postMessage(message);
     }
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  }) as any;
+  });
 };
 
 export const sendCatch: T.SendCatch = function (name, args) {
diff --git a/packages/loot-core/src/platform/client/fetch/index.d.ts b/packages/loot-core/src/platform/client/fetch/index.d.ts
index d6e4d4a31cd..dcb660ea902 100644
--- a/packages/loot-core/src/platform/client/fetch/index.d.ts
+++ b/packages/loot-core/src/platform/client/fetch/index.d.ts
@@ -7,25 +7,31 @@ export type Init = typeof init;
 
 export function send<K extends keyof Handlers>(
   name: K,
-  args?: Parameters<Handlers[K]>[0],
-  options?: { catchErrors: true },
-): ReturnType<
-  | { data: Handlers[K] }
-  | { error: { type: 'APIError' | 'InternalError'; message: string } }
+  args: Parameters<Handlers[K]>[0],
+  options: { catchErrors: true },
+): Promise<
+  | { data: Awaited<ReturnType<Handlers[K]>>; error: undefined }
+  | {
+      data: undefined;
+      error: { type: 'APIError' | 'InternalError'; message: string };
+    }
 >;
 export function send<K extends keyof Handlers>(
   name: K,
   args?: Parameters<Handlers[K]>[0],
   options?: { catchErrors?: boolean },
-): ReturnType<Handlers[K]>;
+): Promise<Awaited<ReturnType<Handlers[K]>>>;
 export type Send = typeof send;
 
 export function sendCatch<K extends keyof Handlers>(
   name: K,
   args?: Parameters<Handlers[K]>[0],
-): ReturnType<
-  | { data: Handlers[K] }
-  | { error: { type: 'APIError' | 'InternalError'; message: string } }
+): Promise<
+  | { data: Awaited<ReturnType<Handlers[K]>>; error: undefined }
+  | {
+      data: undefined;
+      error: { type: 'APIError' | 'InternalError'; message: string };
+    }
 >;
 export type SendCatch = typeof sendCatch;
 
diff --git a/packages/loot-core/src/platform/client/fetch/index.web.ts b/packages/loot-core/src/platform/client/fetch/index.web.ts
index c74ce488a6f..b28c1d680a6 100644
--- a/packages/loot-core/src/platform/client/fetch/index.web.ts
+++ b/packages/loot-core/src/platform/client/fetch/index.web.ts
@@ -79,10 +79,9 @@ export const init: T.Init = async function () {
 };
 
 export const send: T.Send = function (
-  name,
-  args,
-  { catchErrors = false } = {},
-) {
+  ...params: Parameters<T.Send>
+): ReturnType<T.Send> {
+  const [name, args, { catchErrors = false } = {}] = params;
   return new Promise((resolve, reject) => {
     const id = uuidv4();
     replyHandlers.set(id, { resolve, reject });
diff --git a/upcoming-release-notes/4145.md b/upcoming-release-notes/4145.md
new file mode 100644
index 00000000000..d8f8660e424
--- /dev/null
+++ b/upcoming-release-notes/4145.md
@@ -0,0 +1,6 @@
+---
+category: Maintenance
+authors: [jfdoming]
+---
+
+Fix types of `send` function