BLE Upload Error

Please explain:

Arduino: 1.8.13 (Windows 7), Board: "Arduino Nano 33 BLE"

Sketch uses 79148 bytes (8%) of program storage space. Maximum is 983040 bytes.

Global variables use 42776 bytes (16%) of dynamic memory, leaving 219368 bytes for local variables. Maximum is 262144 bytes.

Forcing reset using 1200bps open/close on port COM13

PORTS {COM1, COM3, COM13, } / {COM1, COM3, COM13, } => {}

...repeats many times

PORTS {COM1, COM3, COM13, } / {COM1, COM3, COM13, } => {}

Uploading using selected port: COM13

C:\Users\Owner\AppData\Local\Arduino15\packages\arduino\tools\bossac\1.9.1-arduino1/bossac.exe -d --port=COM13 -U -i -e -w C:\Users\Owner\AppData\Local\Temp\arduino_build_854549/PDMSerialPlotter.ino.bin -R

No device found on COM13

An error occurred while uploading the sketch



This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

BLE Sense is in bootloader mode, Tools->Port reports BLE Sense on COM13

Are you using USB 3.x ?
If so try a USB 2.0 port.

When you put it in bootloader mode are you selecting the post that is shown in DEVICE MANAGER ?

Yes, I set the port to the one shown in Device Manager after putting the board in bootloader mode. I was using a usb 2 port.

It does sound like an IDE specific issue.

If you have a third party antivirus or similar turn it OFF COMPLETLY for a test upload.
There have been reports in the past of security software causing a similar issue but I have not seen any recent reports.