Here’s where the Office Add-in manifest files are cached locally for Desktop Office Apps

When a user acquires an Office Add-in from the store (for Windows Desktop version of Office), a copy of the add-in manifest file is cached locally. Often during troubleshooting it is helpful to be able to verify exactly which version of the manifest is being used, or even inspect the content of the manifest file.

The manifests can be found under %userprofile%\AppData\Local\Microsoft\Office\16.0\Wef\{some-guid}\{opaque-hash}\Manifests\AppId_{version-number}

I’m unclear on what the {some-guid} folder is. I only had 1 folder on some machines I checked so while I don’t know what it represents it’s not hard to find the right folder.

I’m also unclear on what the {opaque-hash} folder represents. I have a hunch it’s different Office accounts that you’ve logged in as (and obviously the manifest available to the users may be different)

Once you get inside the {opaque-hash} folder you should see a folder called Manifests and in there you have the locally cached add-in manifests. These are just plain text that you can open in Notepad 🙂.

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