---
title: "Clear your Outlook caches"
description: "Clear my Outlook caches when I encounter signature issues."
url: https://support.signitic.com/en/articles/9560982-clear-your-outlook-caches
collection: "Troubleshoot Outlook issues"
updated: 2026-10-30
language: en
alternates: [fr, it, de, pt]
---

# Clear your Outlook caches

Clear my Outlook caches when I encounter signature issues.

If you are using **Outlook with the Signitic add-in**, you may notice **the sudden disappearance of the add-in**.

This phenomenon is generally related to:

-   a **malfunction of Outlook add-ins**,
    
-   or an **error when launching the Outlook application**.
    

💡 To verify that the issue is indeed with the local application and not your configuration, you may test the display of your signature from the **Web version of Outlook**.

Here are some solutions for you.

## **❶** Close duplicate open Outlook instances

It is possible that several Outlook windows are launched simultaneously, often due to a slowdown or repeated clicks. This may disrupt the loading of add-ins.

#### Steps to follow:

1.  Open the **Run** dialog on your computer:
    
    -   Press **Windows + R**.
        
2.  Enter one of the following commands depending on your version:
    
    -   `tskill outlook` (classic version),
        
    -   `tskill olk` (New Outlook).
        
3.  Press **Enter**.
    

👉 This will force Outlook to close completely and allow for a clean restart. Next, relaunch Outlook: the Signitic add-in should reappear.

## **❷** Clear your Outlook application's caches

In certain cases, it will be necessary to clear your application's caches and this is not a simple task. However, we will explain everything to you.

### On Windows, proceed as follows:

1\. Close Outlook.

2\. Open the “Run” dialog box by pressing the Windows key + R.

3\. Type “%LOCALAPPDATA%\\Microsoft\\Office\\16.0\\Wef” (replace “16.0” with the version of Outlook you have installed) and press Enter.

![](https://staticfiles.gleap.io/ghelparticle/94TCZP03MiL4JFSRmB2fnXrIcBWf02MtcCxxmoSfOE1RAsUfIeNj8vYl7sT6x4aMTCYmaFG3wh5.png)

4\. Select all files and folders in the “Wef” folder and delete them.

![](https://staticfiles.gleap.io/ghelparticle/9WINQLuoW1BXbkbXabPlM1RS7EwEcZD1I4glaQEzRHD5b04AsmhXDDFR9qXb4BSmei2YJm44v5m.png)

5\. Open Outlook.

The application should be cleared of caches related to the add-ins.

## 🔁 If the issue persists

🕓 Reactivating the add-in may take some time. If, despite these steps, Signitic does not reappear, please contact our support team: we will assist you step by step.