How to install Kutools Online (Excel, Outlook, Word)?

Kutools Online is a cloud-based, AI-powered add-in suite for Excel, Outlook, and Word on Windows, macOS, and the web. It brings time-saving tools—with AI—straight into your Office apps so you work faster and stay in flow, with no app switching and no complex setup. This guide shows how to install Kutools Online via two official paths — Microsoft AppSource (Recommended) and Add from Within the App (Alternative) — then walks you through signing in or registering, updating/removing/reinstalling, and troubleshooting common issues.

Install Kutools Online

This section explains the two official ways to install Kutools Online. Start with Method 1 (AppSource) for the highest success rate across Windows, macOS, and Web; use Method 2 (in-app Store) when the Store entry is available in your Office ribbon.

Compatibility:

Method 1: Install from Microsoft AppSource

Kutools for Excel

1. Search Kutools or Kutools for Excel on Microsoft AppSource and open the Kutools for Excel page.
   Or open directly: Kutools for Excel — Microsoft AppSource.
   
2. Click Get it now, then sign in with your Microsoft account.
3. It jumps to the Kutools for Excel install page in Microsoft Store. Finish installation for Excel on Windows, macOS, or the web.
   • Windows/macOS: Click the Open in Excel button.
     
     In Excel, you can see the KUTOOLS ONLINE tab appear in the ribbon.
     
   • Web: Click the try using Office Online link.
     
     Then click the Open in Excel Online button.
     
     In Excel on the web, you can see the KUTOOLS ONLINE tab appear in the ribbon.
     
4. Click any function button to launch the Kutools for Excel pane, and it appears at the right side of the Excel window.
   

Kutools for Outlook

1. Search Kutools or Kutools for Outlook on Microsoft AppSource and open the Kutools for Outlook page.
   Or open directly: Kutools for Outlook — Microsoft AppSource.
   
2. Click Get it now and sign in.
3. Finish installation for Outlook on Windows, macOS, or the web.
   • Windows/macOS (New Outlook): Under the Home tab, click More apps → Kutools for Outlook.
     
     Tip: Wanna access Kutools for Outlook even quicker? Customize reading pane actions. First, open an email in the reading pane. Then click the … (more actions) button > Customize actions. In the popping-up window, check the Kutools for Outlook checkbox, and click Save.
     
     Now the Kutools icon appears in the message toolbar. You can easily access Kutools for Outlook each time you open an email in the reading pane.
     
   • Windows/macOS (Classic Outlook): The Kutools for Outlook automatically appears on the ribbon under the Home tab. Click on it.
     
   • Web: Under the Home tab, click More apps → Kutools for Outlook.
     
     Tip: To view Kutools for Outlook directly from the ribbon in the Add-ins group under the Home tab. Right-click Kutools for Outlook and click Pin.
     
4. The Kutools for Outlook pane shows up at the right side of the Outlook window.
   

Heads-up: You can click the Pin button to pin the Kutools for Outlook pane so it stays visible all the time. And the New vs.

Kutools for Word

1. Search Kutools or Kutools for Word on Microsoft AppSource and open the Kutools for Word page.
   Or open directly: Kutools for Word — Microsoft AppSource.
   
2. Click Get it now, then sign in with your Microsoft account.
3. It jumps to the Kutools for Word install page in Microsoft Store. Finish installation for Word on Windows, macOS, or the web.
   • Windows/macOS: Click the Open in Word button.
     
     In Word, you can see the KUTOOLS ONLINE tab appear in the ribbon.
     
   • Web: Click the try using Office Online link.
     
     Then click the Open in Word Online button.
     
     In Word on the web, you can see the KUTOOLS ONLINE tab appear in the ribbon.
     
4. Click any function button to launch the Kutools for Word pane, and it appears at the right side of the Word window.
   

Method 2: Add from Within the App

Use the built-in Add-ins / Get Add-ins entry in the ribbon. Method 2 can be affected by Office edition (MSI/LTSC), tenant policies that hide the Store, connected-experiences settings, or network filtering.

Kutools for Excel

1. (Recommended: start on the web) In a browser, open Excel on the web. Under the Home tab, click Add-ins. Search Kutools for Excel and click Add.
   
   Now you can see the KUTOOLS ONLINE tab in the ribbon.
   
2. In Excel for Windows or macOS, make sure you’re signed in with the same Microsoft account (File > Account). Sync happens automatically.
3. Open Excel for Windows or macOS — you’ll see the KUTOOLS ONLINE tab in the ribbon.
   
4. Click any function button to launch the Kutools for Excel pane; it appears on the right side of the Excel window.
   

Kutools for Outlook

1. (Recommended: start on the web) Open Outlook on the web. Click Home > More apps > Add apps.
2. Search Kutools for Outlook in the search bar and click the Kutools for Outlook result.
   
3. Click the Add button.
   
   Then Kutools for Outlook is successfully installed in Outlook on the web. You can view it from Home > More apps.
   
   Tip: To view it directly from the ribbon in the Add-ins group under the Home tab. Right-click Kutools for Outlook and click Pin.
   
4. In Outlook (Classic or New) for Windows or macOS, confirm you’re signed in with the same Microsoft account.
5. Open New Outlook for Windows or macOS — you’ll see Kutools for Outlook installed under Home> More apps, just like Outlook on the web.
   
   Tip: Wanna access Kutools for Outlook even quicker? Customize reading pane actions. First, open an email in the reading pane. Then click the … (more actions) button > Customize actions. In the popping-up window, check the Kutools for Outlook checkbox, and click Save.
   
   Now the Kutools icon appears in the message toolbar. You can easily access Kutools for Outlook each time you open an email in the reading pane.
   
6. Open Classic Outlook for Windows or macOS — you’ll see Kutools for Outlook appears on the ribbon under the Home tab.
   
7. Click Kutools for Outlook, then the Kutools for Outlook pane shows up at the right side of the Outlook window.
   
   Tip: You can click the Pin button to make the Kutools for Outlook pane visible all the time

Kutools for Word

1. (Recommended: start on the web) In a browser, open Word on the web. Under the Home tab, click Add-ins. Search Kutools for Word and click Add.
   
   Now you can see the KUTOOLS ONLINE tab in the ribbon.
   
2. In Word for Windows or macOS, make sure you’re signed in with the same Microsoft account (File > Account). Sync happens automatically.
3. Open Word for Windows or macOS — you’ll see the KUTOOLS ONLINE tab in the ribbon.
   
4. Click any function button to launch the Kutools for Word pane; it appears on the right side of the Word window.
   

Which method should you use?

After you install

This group covers what to do immediately after installation: sign in or create a Kutools Online account, and learn how to update, remove, or reinstall when necessary.

Sign in or register a Kutools Online account

After you see the Kutools pane, sign in to unlock features. If you don’t have an account, register directly in the pane.

Sign in

1. Open the Kutools pane from the ribbon.
2. Enter your Email Address and Password, and click Sign in.
   Tip: Or you can directly click the Sign in link here.
3. Now you can access the Kutools Online features for free with 500 times of use.
   ✨ Wanna upgrade to Premium plan with unlimited usages and advanced features? Click this Kutools Online's Price info page link to learn the detailed information.

Register (no account yet)

1. Open the Kutools pane from the ribbon.
2. In the Kutools pane, click Register now.
   Tip: Or you can directly click the Sign up link to register.
3. Enter:
   • First Name

   • Last Name

   • Email Address

   • Password
4. Click Create Account.
5. Return to the Kutools pane and Sign in with your new account.

Update, remove, or reinstall

Update the add-in

• Automatic updates — “do nothing” path: Office add-ins update automatically. You’ll get the latest version the next time the Kutools pane loads during normal use.
• Quick refresh — “get it now” path: Close the Kutools pane → close the host app → reopen the app → open the Kutools pane again. This forces a fresh load, so any available update applies immediately.

Remove or uninstall

Only this section varies by host app. Choose your app below.

Remove from Excel / Word (Windows, macOS, and Web)

1. Open any workbook/document. Go to Home → Add-ins → Manage (Web). Or Home → Add-ins → More Add-ins → Manage your apps (Desktop).
2. Find Kutools for Excel/Word, then click … → Remove.
   

Remove from Outlook (New, Classic, and Web)

• Outlook on the web: Go to Home → More apps. Right-click on Kutools for Outlook, and click Uninstall.
  
• New/Classic Outlook (Windows/macOS): Go to Home → Get Add-ins → My add-ins. Locate Kutools for Outlook, then click … → Remove.
  

Reinstall

• Recommended: Use Method 1 (AppSource) and sign in with the same Microsoft account as your Office apps.
• Alternative: Open your app’s add-ins gallery, search “Kutools,” and click Add. See Method 2.

Troubleshooting & Solutions

Run into issues? Use the targeted fixes below. Each section includes quick steps that work across Windows, macOS, and Web.

Store is empty or shows “We didn’t find any matches”

Solutions:

• Solution 1: Enable connected experiences

   

  File → Options → Trust Center → Trust Center Settings → Privacy Options → turn on connected experiences; restart the app.

• Solution 2: Fix account mismatch

  
  Sign out of Office → close the app → relaunch → sign in → try Insert > Get Add-ins again.

• Solution 3: Org policy

  
  If your tenant disables the Store, ask IT for Centralized Deployment or use Method 1.

• Solution 4: Network check

  
  Try another network (home/hotspot).

“Add-ins / Get Add-ins” is missing

Solutions:

• Solution 1: Your organization turned this off (most common)

  
  Ask your Microsoft 365 admin to either turn on the Office Store for your account or install Kutools for you via Centralized Deployment. Until the admin does this, the “Add-ins / Get Add-ins” option won’t appear.

• Solution 2: Restore the command on the ribbon

  
  The button can be hidden by customization. Re-add it in File → Options → Customize Ribbon (Windows) or the Ribbon preferences on macOS, then restart the app.

“Get it now” is disabled or blocked

Solutions:

• Solution 1: Organization policy (most common)

  
  Your Microsoft 365 tenant blocks marketplace installs. Ask your admin to either enable the Office Store for your account or deploy Kutools via Centralized Deployment. Until then, “Get it now” will stay unavailable.

• Solution 2: Wrong account type

  
  Many Office add-ins require a work or school (Microsoft 365) account. If you’re signed in with a personal Microsoft account (Outlook.com/Hotmail), switch to your work or school account in AppSource and in your Office apps, then try again.

Admin steps (summary)

1. In the Microsoft 365 admin center, go to Settings → Integrated apps (Centralized Deployment) and deploy the add-in.
2. Assign to a pilot group, validate, then roll out broadly.
3. Ask users to restart Office or re-open the web app to refresh policies.

Installed but not visible

Solutions:

• Solution 1: Force a sync via the web (most effective)

  
  Open the web version of the same app (Excel/Word/Outlook) → sign in with the same Microsoft 365 account → open Kutools once. Then return to desktop and reopen the app.

• Solution 2: Enable it in “My add-ins”

  
  Excel/Word:Home → Add-ins → My add-ins (or Insert → My Add-ins) → select Kutools → Add.
  Outlook (New/Classic/Web):Home → Get Add-ins → My add-ins → enable Kutools.
  
  Tip: In Outlook on the web, you can use Home → More apps, right-click on Kutools for Outlook, then Pin it to the toolbar.

• Solution 3: Fix account mismatch

  
  In the host app, check File → Account (or Account in the app menu) and confirm you’re signed in with the same account used to install. If not visible, sign out → fully quit the app → sign in again → open the Kutools pane.

• Solution 4: Refresh the load / clear cache

  
  Close the Kutools pane → close the host app → reopen the app → open the pane again. If it still won’t show, clear the Office add-in cache (admin or advanced users) and retry.