I am having the same problem with a brand new MacBook Pro running Snow Leopard and Parallels 4 (I would have waited to buy Parallels 5 but did not know it was coming out so soon). For the initial installation from the CD, I let it try to download the latest version, but it got hung and could never complete the download, so I installed the version on the CD and activated it. I immediately began seeing the "network adapter 0 will be disconnected" error that DarrylJ posted earlier.
In experimenting with trying to fix this error, I accidentally deleted the Parallels host adapter from my network connections. Eventually I figured out that was a huge mistake and decided to reinstall Parallels. I tried to Uninstall by clicking the link on the CD startup screen, but it gave me an error and said Parallels was not installed (which was obviously false). Attempting to get rid of the first installation, I dragged and dropped the Parallels stuff from the Applications folder in the Trash.
I then installed Parallels from the CD again and then went to Help -> Check for Updates. This found an update for 4.0.3846, but it was listed two times which I suspect is due to the fact that I could not really uninstall the first installation of Parallels. I unchecked one of the duplicate boxes and was able to successfully download and install 3846, which upgraded my second installation (I think -- the first installation is still in the Trash).
I now see two Parallels Adapters in my Network list, and they both have green lights beside them. Their statuses are:
Parallels Shared Networking Adapter is currently active and has the IP address 10.211.55.2.
Parallels Host-Only Networking Adapter is currently active and has the IP address 10.37.129.2.
However, in my Windows XP VM, I still cannot access the internet. The Network Adapter 1 says it is connected, but it's not working.
The output from my ifconfig -a is:
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
inet6 ::1 prefixlen 128
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1
inet 127.0.0.1 netmask 0xff000000
gif0: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
stf0: flags=0<> mtu 1280
en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
ether 64:b9:e8:cb:e2:f4
media: autoselect status: inactive
supported media: none autoselect 10baseT/UTP <half-duplex> 10baseT/UTP <full-duplex> 10baseT/UTP <full-duplex,flow-control> 10baseT/UTP <full-duplex,hw-loopback> 100baseTX <half-duplex> 100baseTX <full-duplex> 100baseTX <full-duplex,flow-control> 100baseTX <full-duplex,hw-loopback> 1000baseT <full-duplex> 1000baseT <full-duplex,flow-control> 1000baseT <full-duplex,hw-loopback>
fw0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 4078
lladdr 64:b9:e8:ff:fe:cb:e2:f4
media: autoselect <full-duplex> status: inactive
supported media: autoselect <full-duplex>
en1: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet6 fe80::226:bbff:fe1b:1dbf%en1 prefixlen 64 scopeid 0x6
inet 192.168.0.184 netmask 0xffffff00 broadcast 192.168.0.255
ether 00:26:bb:1b:1d:bf
media: autoselect status: active
supported media: autoselect
en2: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
inet6 fe80::21c:42ff:fe00:8%en2 prefixlen 64 scopeid 0x7
inet 10.211.55.2 netmask 0xffffff00 broadcast 10.211.55.255
ether 00:1c:42:00:00:08
media: autoselect status: active
supported media: autoselect
en3: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
inet6 fe80::21c:42ff:fe00:9%en3 prefixlen 64 scopeid 0x8
inet 10.37.129.2 netmask 0xffffff00 broadcast 10.37.129.255
ether 00:1c:42:00:00:09
media: autoselect status: active
supported media: autoselect
First, I am worried about the internet not working on the Windows side. But I am also concerned about the fact that I was not able to uninstall my first installation of Parallels 4. How can I clean up anything leftover from the first installation that could confuse either Parallels or Mac? Do I need to reformat/reinstall Mac and start over before I get any further along in setting this new computer?
I would greatly appreciate any and all help with these issues.
Thank you,
Kay Fancher
P. S. I have just submitted a problem report with the same information as above. The ID is 750534.