# How to Fix Outlook Error Code 0x80070003

> Fix Outlook error 0x80070003, a Windows file-system error that stops add-ins loading: clear the cache, repair Office, and reset your profile.

## What This Error Means

Error code `0x80070003` is a Windows system error meaning "The system cannot find the path specified." In the context of Outlook and add-ins, it indicates that Outlook is trying to access a file or folder path that no longer exists or has become corrupted.

This error is not specific to any one add-in, it is a general Outlook/Windows issue that can affect any add-in or Outlook feature.

## Common Causes

- Corrupted Outlook cache or profile data
- A Windows update or Outlook update changed file paths
- Outlook data files (.ost/.pst) were moved or deleted
- Antivirus software quarantined Outlook files
- The Windows user profile has path corruption

## Step-by-Step Resolution

### 1. Restart Outlook

Close Outlook completely (check that it is not still running in the system tray) and reopen it. This resolves the issue in many cases.

### 2. Clear the Outlook add-in cache

1. Close Outlook completely
2. Press `Win + R` to open the Run dialog
3. Type `%LOCALAPPDATA%\Microsoft\Outlook` and press Enter
4. Look for a folder called `WebExtCache` or `Wef`, if it exists, delete its contents (not the folder itself)
5. Restart Outlook

### 3. Repair your Office installation

1. Open **Windows Settings** → **Apps** → **Installed apps**
2. Find **Microsoft 365** (or **Microsoft Office**) in the list
3. Click the three dots menu → **Modify**
4. Select **Online Repair** and follow the prompts
5. Restart your computer after the repair completes

### 4. Check your Outlook data file paths

1. In Outlook, go to **File** → **Account Settings** → **Account Settings**
2. Click the **Data Files** tab
3. Verify that all listed file paths exist on your system
4. If any paths are invalid, remove the entry and re-add your account

### 5. Create a new Outlook profile

If none of the above steps work, creating a new Outlook profile can resolve persistent path corruption:

1. Open **Control Panel** → **Mail** (or search for "Mail" in Windows Search)
2. Click **Show Profiles** → **Add**
3. Set up your email account in the new profile
4. Set the new profile as the default

## Still Need Help?

If the error persists after these steps, the issue is likely at the Windows or Outlook level. Contact your IT administrator or [Microsoft support](https://support.microsoft.com/en-us/outlook) for further assistance.