Microsoft virtual wifi miniport adapter help

It gets to a point, and continues to wait. A: This happens on non-English versions of XP. You will have to manually install VirtualWiFi as described in the answer to the next question. A: Yes. This will install VirtualWiFi. Finally, for VirtualWiFi to work correctly across reboots, add an entry for network name, i. The uninstall command seems to hang. A: This will happen if the VirtualWiFi service is not running. Note that the VirtualWiFi Service should be running at this time. Q: I am unable to uninstall VirtualWiFi.

Nothing seems to work. Is there a brute force method? Note that you will be modifying the registry at your own risk. It is always better to save a copy of the registry before modifying it. From the registry, look for all entries having VirtualWiFi, and delete them. This is better done in safe mode. We have provided an easier way to delete these registry entries. Note you will have to delete one entry manually, which is prompted by RegDelete. However, please use RegDelete carefully. Check carefully the entries that RegDelete prompts!

A: Think of this value as a timeout value for switching a card to another network. Even if VirtualWiFi is unable to associate to another network, it still buffers packets sent on that network. These packets will be freed, only when the switch timeout is exceeded.

In most cases, the timeout value used by default works well, and need not be changed. Q: What is a good number for the switch time to use in VirtualWiFi.

A: This number varies across different cards, and across different implementations. For a Lucent card, you could use numbers around ms to switch to an ad hoc network, and ms to switch to an IS network. Overall, our suggestion is to try a safe number. A: We found this value using Airopeek, which is a wireless sniffer.

However, you do not have to use this expensive tool. An easier way to measure this number is using the utility we provide with our distribution of VirtualWiFi, called VirtualWiFihelper. The command VirtualWiFihelper. Also make sure the wireless zero config is turned off, and you are able to connect to the network. A way to check for connectivity is by following these steps. Then, turn on Wireless Zero Configuration, and try connecting to your network. Q: Why do you ask me to stop wireless zero configuration service, and other wireless adapter utilities?

A: These utilities interact with the wireless card, and try to force connectivity to their preferred networks. This might interfere with the correct operation of VirtualWiFi. A: In our current implementation of VirtualWiFi, all packets arriving at a wireless card are forwarded to the currently active virtual adapter.

If you started another network before the DHCP request timed out, it is possible for the card to receive a DHCP reply from another network and forward it to the incorrect virtual adapter. We suggest that the user wait for an ad hoc network to get a valid autoconfig address before it adds another network.

It will automatically work after reboot. A: On rebooting the machine, VirtualWiFi starts connecting to all networks, including the ones that were removed. You should explicitly add the networks you had removed, and remove them again to get back to a consistent state. Does it mean that my underlying card is able to successfully switch to that network?

A: No. So, you will be unable to monitor the state of the network by looking at the Network Connections window. Q: Is there a manual way, other than using VirtualWiFi. Stop the VirtualWiFi Service. Right click, and press Disable. Then, start the VirtualWiFi Service. This will remove the miniport. A: You need to define it to the path of SDK include files. Remember to handle blank spaces correctly.

Q: Why is copyobjchkfiles. Change objchk in copyobjchkfiles. You should create this directory first. This will also cause the copy to fail. A: Uninstall VirtualWiFi, if installed. You might have to wait for a few minutes. Close the Network connections Window and retry. You should be successful. Infocom Presentation. Mobicom Presentation. Ranveer Chandra, Venkata N. MobiSys Presentation. VirtualWiFi received some press coverage in late October, Some of the articles are linked below:.

Follow us:. Share this page:. VirtualWiFi Established: December 22, Expand all Collapse all. You can use VirtualWiFi to connect your ad hoc network, which may contain many nodes, to the Internet using only one node. VirtualWiFi can help make your home infrastructure network elastic by extending its access to nodes that are out of range of your home WiFi Access Point.

Software Version 1. If you will not modify the VirtualWiFi software, these files are sufficient. If you are interested in developing software that require VirtualWiFi functionality, you should modify the source code. The features not implemented in this release of VirtualWiFi are: Buffering at remote nodes: We have prototyped this feature and presented the results.

However, it is not implemented in this release. WPA and Limited version of WEP is supported. Multiple cards: The kernel implementation of VirtualWiFi supports multiple cards. However, we have not incorporated this support in the user level code of this release. Following are the prerequisites for using VirtualWiFi: You should have administrative rights to install drivers and services on your machine.

Copy the VirtualWiFi binaries. The directory will have the following files: VirtualWiFi. See below on how to use it. Make sure you have only one wireless card in your computer. Note, disabling one of the wireless adapters will not work! Make sure your wireless card is associated to a network. You can use wirelessutils provided with this package to connect to a network.

If it does not, then refer to FAQ. This attribute should be checked for only the wireless adapter. Finally, do the following to check if VirtualWiFi will work with your wireless adapter. If this step does not work see FAQ for reasons , then unfortunately you will have to wait for future releases of VirtualWiFi to use it over your card.

In the meantime, do try VirtualWiFi over other supported cards. The op is either: switch : for the maximum time in milliseconds for your card to switch to this network.

See FAQ on what are good values for this parameter. The card waits for a wait time in addition to the switch time after switching to a network. By default, VirtualWiFi uses adaptive switching. Tests for Checking Correctness The following tests could be used to verify the correct operation of VirtualWiFi: Check if you can independently associate with each network, and whether you get a valid IP address. This should be done before you install VirtualWiFi.

After installing VirtualWiFi, or after adding a network, check to see on the network connections window for virtual adapter corresponding to each connection, and if all virtual miniports get a valid IP address.

Periodically checking this value will inform you if the card is really switching across different SSIDs. Periodically executing this command will tell you if the card is really switching across different network modes. After that follow the create hostednetwork process using cmd command.

I solved it by set EnableAdaptivity as Enable. But I have Hosted network supported : Yes. There is no HT mode in my wifi adapter's Property list.

You need to manually change the version of your wi-fi driver. Just follow the below steps to do it:. Finally u will see a list of drivers and their versions. Just double click on the oldest version. Mostly it should be listed in the top with no date of release in it. Installing the Microsoft hosted Virtual Adapter will solve your problem. That particular adapter can create a WiFi hotspot in Windows. Thank you for your interest in this question. Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site the association bonus does not count.

Would you like to answer one of these unanswered questions instead? Active 1 year, 9 months ago.