Unable to detect my TV as a wireless monitor

[SplendidOx]

I used my TV as a wireless monitor for a while. Recently, it failed to connect to my TV. Today I found my PC even cannot detect my TV as a wireless monitor. I did not make any change on my PC or TV. I can detect other TVs of my neighbors. I can also screen mirror to my TV from my phone.I tried to update the Windows system but it still did not work. I wonder what I should do.Thanks,Charlie

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