PPT Add-in Error Code

Question

Hello,

I’m trying to install the ChatGPT add-in for PowerPoint (or any other add-in), but PowerPoint shows:

Something went wrong Please try again later.

Error code: 0x80070422

Correlation Id: ff000000-0000-0000-0000-000000000000

Timestamp: 2026-05-25T19:21:43.000Z

Message: An unexpected error occurred. Tag: 7q6ca Code: 2147943458

I’ve already tried restarting PowerPoint and my PC.

How can I fix this?

Answer 1

Hi tommy, welcome in community

Here are some steps you can try to fix the issue:

1. Clear stored credentials

• Press Win + S and type Credential Manager
• Open Windows Credentials
• Remove any entries related to MicrosoftOffice or MicrosoftAccount
• Restart your PC and try again

2. Repair Office apps

• Go to Settings > Apps > Installed apps
• Search for Microsoft Office
• Click Modify, then choose Repair

This process reinstalls missing or corrupted components that may prevent authentication or synchronization with your Microsoft account.

Let me know

Elvis

Answer 2

Error 0x80070422 is a generic failure when Office tries to load or install an add-in. Use the following steps to troubleshoot and reload the add-in.

1. Close PowerPoint completely

• Exit all Office apps (PowerPoint, Word, Excel, Outlook).
• Make sure no Office processes are running in Task Manager.

2. Clear cached add-in information and reload

• Close PowerPoint.
• Delete the Office Web Extensions cache folder:
  • In File Explorer, go to:
    • %localappdata%\Microsoft\Office\16.0\Wef
  • If the folder exists, delete it.
• Open PowerPoint again.
• Try installing the add-in again via File > Get Add-ins (or Home > Add-ins), then use Store or My Add-ins to add it.

3. Reinstall the add-in if it is already listed

• In PowerPoint, select File > Get Add-ins (or Home > Add-ins).
• Choose More Add-ins.
• On the My Add-ins tab, if the add-in is listed but not working:
  • Remove it.
  • Add it again from Store or by using Upload My Add-in if it is a custom manifest.

4. Fix registry entries that block add-ins from starting Warning: Incorrect registry edits can cause system issues. Only proceed if comfortable editing the registry.

• Close all Office apps.
• Press Windows + R, type regedit, press Enter.
• Go to:
  • HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\WEF\Providers
• For each subkey under Providers:
  • Check the UniqueId value.
  • If UniqueId ends with _ADAL (for example, 3a975b5d-ad3e-4e3d-84b0-a7e6776ba6a6_ADAL) or is Anonymous, delete that subkey.
• Close Registry Editor.
• Again delete the cache folder if present:
  • %localappdata%\Microsoft\Office\16.0\Wef
• Reopen PowerPoint and try installing the add-in again.

5. Check for configuration or policy issues If an ADD-IN INFORMATION bar appears at the top of the task pane (for example, saying add-ins are blocked by configuration or policy), this indicates a Microsoft 365 configuration issue rather than a problem with the add-in itself. In that case, contact the Microsoft 365 administrator to review add-in policies as described in the add-in information bar.
6. If add-ins still fail or crash If add-ins crash or fail to load after the above steps, run an Online Repair of Office to repair the Office installation and its add-in components. See the repair guidance in the referenced articles.

After each major step (cache clear + registry fix, then repair), retry installing the add-in from File > Get Add-ins.

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References:

• Error: "We can't start this app" when you install an Office add-in
• Troubleshoot user errors with Office Add-ins
• Add or load a PowerPoint add-in
• View, manage, and install add-ins for Excel, PowerPoint, and Word
• "Access Denied" when launching an Office add-in
• Error message when starting a Microsoft Office third-party add-in that relies on .NET binaries
• Office Add-ins known issues
• how fix run into an error problem - Microsoft Q&A