November 26, 2025: Update to the PDFSignForm tool in Outlook Classic

This procedure explains how to update the Outlook Secure Exchanges Outlook Area Sign Form tool. The update is necessary to ensure compatibility with the latest changes introduced by Microsoft.

Important warning
The steps below must be followed in the exact order presented. The images included in this article are provided for visual reference only to illustrate the actions to be performed. Be sure to follow each step to ensure the tool is updated correctly.

Step 1. Uninstall the old version of PDFSignForm from the machine

1. Open the Control Panel .
   
   

2. Click on "Uninstall a program" .
   
   

3. Find Secure Exchanges Outlook Area Sign Form in the list, then select it and click Uninstall .
   
   

   This step requires system administrator rights.

   

4. Press the Windows key + R on your keyboard, then type %userprofile%\AppData\Roaming\SecureExchanges in the search bar that appears.
   
   
   
   
   

5. Delete the "PDFSignForm" folder
   
   
   

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Step 2. Install the new version of the tool

1. Download the new version from our website.
   

   

   The downloaded file will be a .msi file.
   
   
   

2. Once the download is complete, click on the SecureExchangesOASF.msi file.
   
   

If a warning appears during the download

1. Click on the three small dots to the right of the file, then click on keep
   
   
   
2. Then click on Keep anyway .
   
   
   
3. Once finished, click on the SecureExchangesOASF.msi file.
   
   

If Windows displays a SmartScreen warning

1. Click on Additional Information .
   

2. Click on Run anyway .
   

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Step 3. Install the tool

1. The installer will open.

2. Allow the installation to complete.
   
   
   

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Step 4. Check the installed version

Once the installation is complete, return to the " Control Panel" , " Programs" section. The version displayed for Secure Exchanges Outlook Area Sign Form should be 25.11.261 .

You are now up to date.

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