Slidewise works with any files in folders that are synced to your local computer with OneDrive. If you experience the Unsupported File Location error then the file is in a folder that is not synced by OneDrive. If the file is in a folder synced with OneDrive then please report the problem to us as detailed in the section Reporting issues with Synced Files below.
What are synced folders or files?
Syncing folders makes it really easy to work with online files. Files are not downloaded until you need them so they don't take up any space on your computer. When you Sync a folder from an online Site, Teams Channel, or OneDrive folder it appears in the sidebar when you open File Explorer. Each file within the folder (or sub-folder) can be accessed and opened with a normal double-click.

Microsoft Teams
When opening PowerPoint files from within Teams channels, ensure that the Teams channel is synced so that Slidewise works with all the files in that channel.
Just click the Files tab in the channel and hit the Sync button as shown in the video below.
How to sync Microsoft Teams channel to ensure Slidewise works seamlessly
Here are a few steps showing how to sync a folder in SharePoint or OneDrive:
Note: OneDrive Business app must be running and signed in with your account on your computer.
- Navigate to a SharePoint/Teams or OneDrive folder in a web browser.
- Once inside the folder you want to sync, choose the 'Sync' option in the top menu

- You should get a notification from OneDrive that your files are now being synced.

- Your files will be available in File Explorer, where you can double click to open them

Read more details about sync from Microsoft
If you find that you have issues opening files in Synced OneDrive or SharePoint Folders then in order to investigate further we need you to share with us, the following two things.:
A. The local path of the file. You can get this by clicking on File Explorer's address bar and copying the local path.
B. OneDrive's configuration file. This is just a text file detailing how OneDrive interacts with your files and folders and there should not be anything sensitive in this file. However, please feel free to read the content of the file before sending it to us to be sure.
These quick steps should take less than a minute:
- Press Windows+R to open “Run” box. Type “cmd” and then click “OK” to open a Command Prompt.
- Paste the following line of text into the command prompt window and press Enter:
reg export HKCU\SOFTWARE\SyncEngines\Providers\OneDrive onedrive.txt
- Now open Windows Explorer and paste the following in the address bar:
%userprofile%
- There will be a file called "onedrive.txt" in that folder which contains the registry information we need.
We'd really appreciate your help with this, as it's not possible for us to recreate all the scenarios in our lab, we can't get this feature working fully without your help.