---
title: "Resolution of various add-in related issues"
description: "Can you no longer find your add-in? Is your signature no longer appearing automatically? Your Outlook application is probably encountering an error."
url: https://support.signitic.com/en/articles/9561002-resolution-of-various-add-in-related-issues
collection: "Troubleshoot Outlook issues"
updated: 2026-10-22
language: en
alternates: [fr, it, de, pt]
---

# Resolution of various add-in related issues

Can you no longer find your add-in? Is your signature no longer appearing automatically? Your Outlook application is probably encountering an error.

The Signitic add-in is a complement. Its launch is therefore managed by your Outlook application. If the add-in does not appear after a few seconds in your application, it is possible that your application did not start correctly. To check this, you can perform the test on the web version of Outlook. If the add-in appears in the web version, this confirms that your application is experiencing an issue.

Here is a procedure to resolve this issue:

## **❶** Windows

Open the Run application on the computer,

![](https://staticfiles.gleap.io/ghelparticle/bq4JFME9MDmDMFxqQauDRfJ0vbSa92cXvnQOEOgr0ciCO4gMowGwVpzfFDrgEZPOsk6qEEqOxVa.png)

Enter:

-   "tskill outlook" if you are using the classic version of the Outlook application.
    
-   "tskil olk" if you are using the new version of the Outlook application.
    

![](https://staticfiles.gleap.io/ghelparticle/zvc2xXc2ffBtawfAnUQF0i2Rrmjdw6CxFHYCGyRSDTuVLZuF4pUSMQUnWLvzvJ891edpSaSTiV4.png)

This should close the Outlook application. If this is not the case, please try the "Tskill olk" option.

Once this operation has been completed, open Outlook again and wait a few moments. Open a new email; the add-in should appear.

## **❷** Another action to perform for Windows

Following the first action, you can try closing and reopening Outlook three times in order to clear the caches of your Outlook application. This action is a simplified procedure recommended by Microsoft to clear the application caches.

## **❸** Mac

To access the task manager on your Mac, here is the shortcut: Cmd⌘ + Option + R. Once the task manager is open, force close Outlook.

![](https://staticfiles.gleap.io/ghelparticle/mp8hCM7Jx0m3TZ5T3WmqR5wU3n82HxjrhSe1UDiVGCBpYglJ15nl4a1xd1IDgh1ziEcXDC8IX5Y.png)

Once this operation has been completed, reopen Outlook, wait a few moments, then repeat the test.

## **❹** Managing applications on the classic version of Outlook

You may encounter a bug related to an Outlook option. To check, here is the path to locate it: File -> Options -> Advanced options  

-   From the Outlook home page, you can access the _File_ tab here:
    

![](https://staticfiles.gleap.io/p669e4628f35b0c8e9eff6ebe/ZNPOb16USXwOjRUwSQ8jgXZOUtRbf8hekFq7QC3RdY9y4fFmJae6ZycJCE3jl1hkdMe0KrUi2l1.png)

-   From the _File_ tab, you can then access **Advanced options** by clicking on _Options_  
    
    ![](https://staticfiles.gleap.io/gattachments/K7YXrOXlP8q4qSCAB1Y55gqnyk7wxwSWy6MJLi1ZOjbPur2p79ABqIjVFoqJOD7GfcF3AaVlSyN.png)
    

-   From the Advanced options tab, you can finally check the box **“Show apps in Outlook”**  
    
    ![](https://staticfiles.gleap.io/gattachments/R9eipzYqjJQCD4Vq0QK7uhTRuxyuRsYsRnBanIRmwNwK8rNzNB3duZCRduJk06TPF3PPnNq5u5g.png)
    

  
**Close the Outlook application, then perform the test again.**

If the add-in still does not appear, please contact support via our chat.