I was able to find a solution on the internet.
In my situation I had to remove the old Realtek Bluetooth driver named: RtkBtfilter.sys (C: \ Windows \ System32 \ drivers folder). After deleting the file, the update went without a problem.
Here I found a solution...
Hi,
For almost 2 years I have Lenovo Legion Y520-15IKBM.
I noticed that I have an old version of the system (1803). Windows did not inform me about this.
Trying to upgrade to 1903 (or 1909) the problem occurs:
The Windows support page has a guide on what to do in this case.
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bluetooth
computer issues
device manager
driver issues
installation
lenovo
lenovo vantage
os version
realtek
support
tech support
troubleshooting
upgrade
user guide
version 1903
version 1909
windows 10
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