Cannot connect to network computers anymore.?

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I recently moved and was without internet for a while. So in order for me and my fiancee to play LAN games together, I connected our computers via ethernet and setup a homegroup. Thus allowing us to play games like Minecraft and access shared folders over our private network. Recently, I was finally able to afford

I recently moved and was without internet for a while. So in order for me and my fiancee to play LAN games together, I connected our computers via ethernet and setup a homegroup. Thus allowing us to play games like Minecraft and access shared folders over our private network. Recently, I was finally able to afford internet and we have our computers connected to the router with a switch. Now, neither of us can view folders over the network, Either a window pops up saying "Network Error: You do not have permission to access //(Username). Contact your network administrator to request access." I've even tried unplugging our computers from the switch, resetting everything, and reconnecting via ethernet LAN. Still same issue. What happened and how do I fix this? I shouldn't have to resort to using a flash drive to transfer files between 2 computers that are literally a foot apart.

Other answer:

Gen Minion:
If you connected the two computers via Ethernet either directly, or through an Ethernet switch, then you would have needed to configure the addresses in the two computers manually and put them on static addresses. If you are now connected to a router, then the addresses of the computers should be configured to be set up automatically by the router. If they are still configured with the manual addresses, then this may not be compatible with the address of the router.

If you connected the two computers directly to one another with with an Ethernet cable , but did not have an Ethernet switch, then the Ethernet cable may have been a cross-over cable; however, when you connect them to an Ethernet switch, both computers should normally be connected with normal (not cross-over) cables. Some switches will adjust automatically to the different types of cables, but others will not.

Why have you got a switch AND a router? You should connect the computers directly to Ethernet ports on the router. Most home routers have four Ethernet PC/LAN ports for computers, games consoles, TVs and TV boxes to connect to. Some have a fifth port normally of a different colour labelled as a WAN/Internet port, which is used if your Internet connection comes through a separate modem.

You need to do some diagnostics to find the problem. Do the following:

1) Assuming they are Windows computers, open Network and Sharing Center by right clicking on the network icon near the clock at the bottom right of the screen. Next click on the Ethernet connection in the N&SC window, which should bring up the Ethernet status. In the status window, click on Details and check what addresses it is showing. If the address starts 169.254… then the automatic address set up has not worked. Other symptoms are having no gateway of DNS server addresses showing.

2) Go as far as opening the Ethernet status window above, then click on Properties to open the Ethernet properties window. Scroll down to the TCP/IPv4 entry and double click on in. Check that the address settings are both set to automatic and no actual addresses appear in the page.

3) Check that all the Ethernet cables are normal (not cross-over) cables.

4) Connect the computers directly to the router.

5) Check that the router is showing the correct lights to confirm there is an Internet connection. If you have a separate modem, check this as well.

6) Check that the device you call a router is genuinely a router and not simply a modem. If it is a modem, it will only support one device (a single computer or a router).

7) Discard the switch. You should not need a switch if you have a router.

8) Finally, either update this question or ask another question that includes relevant details such as:

a) the make and model of the router.

b) the make and model of the modem if you have a separate modem.

c) the make and model of the switch (although you should not need it with a router).

d) the operating system(s) with versions on your computers.

e) the complete list of addresses shown in the Details windows of each computer.

Please provide enough details to allow others to help you.

Kevin:
you want connected the two computers via ethernet either directly, or through an ethernet switch, then you would have needed to configure the addresses in the two computers manually and put them on static addresses… if you are now connected to a router, then the addresses of the computers should be configured to be set up automatically by the router… if they are still configured with the manual addresses, then this may not be compatible with the address of the router.
You have to set up sharing of your files or folders or entire hard disk letter with the other computer's hard disk or certain folders. That holds for the other one also in the reverse direction. If not shared, you cannot get access to another computer's files. You can limit what sharing level.
Lievia:
if you connected the two computers via ethernet either directly, or through an ethernet switch, then you would have needed to configure the addresses in the two computers manually and put them on static addresses… if you are now connected to a router, then the addresses of the computers should be configured to be set up automatically by the router… if they are still configured with the manual addresses, then this may not be compatible with the address of the router…

if you connected the two computers directly to one another with with an ethernet cable , but did not have an ethernet switch, then the ethernet cable may have been a cross-over cable; however, when you connect them to an ethernet switch, both computers should normally be connected with normal (not cross-over) cables… some switches shall adjust automatically to the different types of cables, but others shall not…

well, why have you got a switch and a router? you should connect the computers directly to ethernet ports on the router… most home routers have four ethernet pc/lan ports for computers, games consoles, tvs and tv boxes to connect to… some have a fifth port normally of a different colour labelled as a wan/internet port, which is used if your internet connection comes through a separate modem…

you need to do some diagnostics to find the problem… do the following:

1) assuming they are windows computers, open network and sharing center by right clicking on the network icon near the clock at the bottom right of the screen… next click on the ethernet connection in the n&sc window, which should bring up the ethernet status… in the status window, click on details and check what addresses it is showing… if the address starts 169…254……… then the automatic address set up has not worked… other symptoms are having no gateway of dns server addresses showing…

2) go as far as opening the ethernet status window above, then click on properties to open the ethernet properties window… scroll down to the tcp/ipv4 entry and double click on in… check that the address settings are both set to automatic and no actual addresses appear in the page…

3) check that all the ethernet cables are normal (not cross-over) cables…

4) connect the computers directly to the router…

5) check that the router is showing the correct lights to confirm there's an internet connection… if you have a separate modem, check this as well…

6) check that the device you call a router is genuinely a router and not simply a modem… if it is a modem, it shall only support one device (a single computer or a router)…

7) discard the switch… you should not need a switch if you have a router…

8) finally, either update this question or ask another question that includes relevant details such as:

a) the make and model of the router…

b) the make and model of the modem if you have a separate modem…

c) the make and model of the switch (although you should not need it with a router)…

d) the operating system(s) with versions on your computers…

e) the complete list of addresses shown in the details windows of each computer…

pleease provide enough details to allow others to help you…

Who:
originally you didnt have a router (I assume)

so one of the computers was set up as a DHCP server (cos you need a DHCP server to set up a network)

Now you have a router this is also set up as a DHCP server by default

So now you have local addressing conflict
(in effect 2 separate local networks with a computer on each, 1 computer is getting its local address from 1 server and the other from the second server. Since computers on different servers dont know about each other that means they wont/cant talk to each other)
The error message you are getting is telling you to setup a local address on the other DHCP server (your computer "knows" another network exists, but you aint on it)

Log into the router and disable DHCP addressing, or disable it on the computer you originally set up a network, Then you will finish with only 1 network and both computers will connect via it

(its preferable you leave the router alone and disable it on the computer. So long as the switch is connected to the router it dont matter, ALL that matters is that there is a DHCP server somewhere on the network. As far as a network is concerned a switch is transparent

Starrysky:
You have to set up sharing of your files or folders or entire hard disk letter with the other computer's hard disk or certain folders. That holds for the other one also in the reverse direction. If not shared, you cannot get access to another computer's files. You can limit what sharing level (all, read only, certain persons).
Amy:
you have to set up sharing of your files or folders or entire hard disk letter with the other computer's hard disk or certain folders… that holds for the other one also in the reverse direction… if not shared, you cannot get access to another computer's files… you can limit what sharing level (all, read only, certain persons)…
Leticia:
you have to set up sharing of your files or folders or entire hard disk letter with the other computer's hard disk or certain folders……… that holds for the other one also in the reverse direction……… if not shared, you cannot get access to another computer's files……… you can limit what sharing level (all, read only, certain persons)………
Lori:
you have to set up sharing of your files or folders or entire hard disk letter with the other computer's hard disk or certain folders… that holds for the other one also in the reverse direction… if not shared, you cannot get access to another computer's files… you can limit what sharing level (all, read only, certain persons)…
chrisjbsc:
What up address do the 2 pcs have?

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