How to fix error #-2147024809 when using downloaded maps?

If you get this error,  it means there is probably a Windows permission issue on the directory. Apps are not allowed to access local drives at their root (such as D:\...). Try creating a folder "offline" on D:\, copy the already downloaded maps (D:\Google_Map\ for instance) so that it is D:\\offline\Google_Map\.

Then in Maps Pro, open the "Download this map" section, and pick the "D:\offline\" folder as a download target.
Then restart Maps Pro

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