Hardware DHCP, Wifi cant connect
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 Oct 21 2025, 08:10 AM, updated 3 months ago
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#1
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Senior Member
3,217 posts Joined: Dec 2006 From: City of Neko~~Nyaa~ 
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My home WiFi,
Can't get ip using dhcp, But static can... Problem was my sis laptop need connect to other WiFi during study.... Which using dhcp..... And she not tech savvy.... What the problem with dhcp? I check my router ip pool still got left over free address unused... I got reserve ip base on mac in router.... |
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Oct 21 2025, 10:30 AM
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#2
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Senior Member
3,217 posts Joined: Dec 2006 From: City of Neko~~Nyaa~
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QUOTE(CPURanger @ Oct 21 2025, 10:04 AM) Is your sister's laptop is a MacBook running latest macOS ? Windows 10 laptop...In macOS there is a feature to rotate Wifi mac address. This is to improve privacy. Looks like have to turn off feature to use DHCP. https://support.apple.com/en-mt/102509  My office some laptop also same.... |
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Oct 21 2025, 02:35 PM
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#3
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Senior Member
3,217 posts Joined: Dec 2006 From: City of Neko~~Nyaa~
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QUOTE(PJng @ Oct 21 2025, 11:01 AM) don undersatnd, say home wifi, then outside wifi need connect to home & school wifi...reinstall wifi driver? on windows 11 can random mac address, i not sure windows 10 got such option, my old windows 10 pc don have wifi, cannot test if set static ip (home) school wifi cant connect unless remove the static ip QUOTE(soulz69 @ Oct 21 2025, 11:07 AM) make sure the laptop wifi IP and DNS is set to auto. auto school wifi can connectoffice laptop might have their on configuration setup by the IT Dept.  but home wifi can't connect, need static ip... QUOTE(Imbi Plaza Lot 1.28 @ Oct 21 2025, 12:03 PM) Scan system for malware infection, next reset your Windows 10 network settings. new notebook just full format.... |
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Oct 21 2025, 03:40 PM
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#4
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Senior Member
3,217 posts Joined: Dec 2006 From: City of Neko~~Nyaa~
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QUOTE(soulz69 @ Oct 21 2025, 03:14 PM) have you try restart the router? restart also same....QUOTE(jusbella @ Oct 21 2025, 03:16 PM) Try put DHCP lease time 28800. already ...if i remove the ip pool range.. and remove reserve ip... will it solve or not... |
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Oct 21 2025, 04:41 PM
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#5
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Senior Member
3,217 posts Joined: Dec 2006 From: City of Neko~~Nyaa~
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QUOTE(PJng @ Oct 21 2025, 03:52 PM) If you assign fix Ip on router for that laptop already reserve ip for that laptop mac addressQUOTE(anakkk @ Oct 21 2025, 04:01 PM) when at home, can your sister laptop receivde dhcp lease? what is the ip address? try troublehooting option? at home if dhcp, cant connect wifi..then your laptop no issue? try netsh winsock reset?? need set ip address... QUOTE(soulz69 @ Oct 21 2025, 04:36 PM) is the static ip at laptop is the same as the reserve ip? yes, same... |
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Oct 21 2025, 09:47 PM
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#6
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Senior Member
3,217 posts Joined: Dec 2006 From: City of Neko~~Nyaa~
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QUOTE(anakkk @ Oct 21 2025, 08:32 PM) cannot connect wifi can be the password is not correct?? what is the error when login to wifi password correct as if static ip can auto connect....if wifi is connected, is there any DHCP leased from the router?  QUOTE(ktek @ Oct 21 2025, 08:48 PM) what dhcp ip address u get at home normal ...192.168.0.XXX ---------------------- now remove the mac address from ip reserve... it can connect using dhcp... |
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Oct 22 2025, 08:08 AM
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#7
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Senior Member
3,217 posts Joined: Dec 2006 From: City of Neko~~Nyaa~
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QUOTE(anakkk @ Oct 22 2025, 07:21 AM) so all good now? So far ok...Tonight see still ok or not... |
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Oct 22 2025, 08:19 AM
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#8
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Senior Member
3,217 posts Joined: Dec 2006 From: City of Neko~~Nyaa~
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QUOTE(WaCKy-Angel @ Oct 22 2025, 08:16 AM) Normally due to signal weak too far from router. Signal just next room...Y got reserve ip in the 1st place? Yup got reserve ip... But now remove it... And it can connect via dhcp already.... Which very weird.... |
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