Issue Description

When installing a new version of AutomationDock following error message may pop up.

Issue Solution

The Microsoft Office Customization Installer message pops up becasue there is still an old version of AutomationDock installed on the user's computer. When installing a new venrsion of AutomationDock, the previous version must be uninstalled first. Please follow the following steps:

1. Go to Start menu and type in Add or remove programs - Click on it
   
   
   
   
2. Search for AutomationDock application
   
   
   
   
3. Click on the three dots on the right hand side and click Uninstall
   
   
   
4. Click Uninstall again
   
   
   
5. Click OK button
   
   
   
6. Now, AutomationDock is successfully uninstalled - user can now proceed with installation of a new version of AutomationDock.

Issue Solution #2

If uninstalling AutomationDock is not available - the application is not listed among applications to Uninstall, the add-in might still be registered even if it’s not visible in “Add or Remove Programs”. Clean-up the previous installation:

Check the Registry: 

• Open regedit and navigate to: HKEY_CURRENT_USER\Software\Microsoft\VSTA\Solutions
• Look for a {GUID} key that corresponds to your add-in.
• Check the URL value to confirm it’s the right one, then delete the key.
  
  

Clear ClickOnce Cache – Sometimes the ClickOnce cache holds onto old versions.

• Run this command: rundll32 dfshim CleanOnlineAppCache
• This Deletes the contents — this is where ClickOnce stores cached apps.
  
  Check Excel Add-ins 
  • Open Excel → File → Options → Add-ins → Manage COM Add-ins → Go. See if your add-in is listed there and try removing it.
    
    Reinstall with Correct Version 
  • Once cleaned, try reinstalling the new .vsto file. Make sure it’s from a trusted location and matches the expected version.