BLUETOOTH connection problem (phone to PC only)

Have been unable for several months now to send photos, or any file, from Android Phone (MiA1, Android 9) to PC (Windows 10 Pro 64-bit 1809 running on LENOVO V33015IKB). Latest updates installed to both Android and Windows. Your Smartphone on PC: version 1.19032.731.0, Your Phone Companion on Android: version 3.4.5

Already tried switching "Battery optimization exception" in YPC to ON. Also tried additionally connecting phone to PC as a tethered hotspot. Both times no improvement.

What works:
- sending any file from PC to phone via bluetooth
- using "Continue on PC" to send link from phone via bluetooth to browser on PC

What doesn't work:
- Share photo (or any file) from phone to PC via bluetooth symbol
- Using Your Smartphone to load photos from phone

Expected behavior: the latter two should both work.

Went through the troubleshooting page https://support.microsoft.com/de-de/...roubleshooting and applied the steps therein:

In Windows -> System, system accounts are shown OK. In Shared Usage relevant settings are both switched ON.

In Windows settings, Your Smartphone "Allow to run as background app" ON.

Smartphone is not in airplane mode.

Logged into Microsoft account on both PC and phone.

"Do not disturb" on phone is OFF.

EDIT: Sorry forgot to mention, in phone cleared cache and cleared storage for Your Phone Companion

Disconnecting phone via accounts.microsoft.com/devices does not help.

Disconnecting phone via Windows Settings does not help.

Restarting Windows PC and reconnecting phone does not help.

Same problem regardless of whether PC is online via WiFi or via mobile Internet (USB stick).

And what is worse, now Your Smartphone no longer even shows the photos from the time when it used to work (though sending via "Send As" from PC to phone still works). Please help!

- - - Updated - - -

Eh ... this is odd ... and messy. After restarting PC a couple of times and this time hooking it up to WiFi, Your Smartphone now does update to the most recently taken 25 photos from phone ... but at the end also tells me "connection not possible"

And all attempts to share a file (photo) from phone to PC via tapping on bluetooth icon still fail.

Hello!

In order to send a file from phone to PC, you must tell the PC you are about to send a file. This is done by right-click on the Bluetooth icon (or via PC Settings) and select the Receive File option. If you just try to send a file without doing that first, connection is denied by the PC for security reasons and it fails. In rare cases that you don't have the proper Bluetooth driver or there is some incompatibility in the PC due to old Bluetooth hardware, you can always try a third party utility called Blue Soleil by IVT that replaces the default Bluetooth drivers and adds many features. Particularly in Windows 7, Blue Soleil is the only way to output audio to USB speakers in the majority of old laptops where the default driver doesn't explicitly has this option. One major disadvantage is that any Bluetooth data exchange is only done through its own Bluetooth application, so you cannot just use Bluetooth from any other application (such as a mobile phone suite). So use it as a last resort.

Thank you spapakons for the explanation, did not know this. Had to try a couple of times, at first without success, but just now managed to upload an image file! Have to go do something else now, if I don't return to report on any persistent difficulties by the end of today, would the Mods kindly mark this thread SOLVED, please. Or I'll be back to do it myself, later.