Hello. I am a relatively new user of OpenVPN - Thank you for your collective responses and guides that have been very helpful to me! I installed OpenVPN Access Server 2.0.10 on a Ubuntu instance I have in the cloud. I've successfully connected using OpenVPN Connect 2.0.8.106 on a Windows 8.1 Pro 64-bit laptop, and have been able to access other private servers in that same cloud. However, when I tried to do the same thing from my Windows 7 Pro SP1 64-bit desktop, I've been troubleshooting for the better part of the day and am still unable to get past a particular issue, as seen in this log file excerpt: [color=#800040]Fri Dec 12 16:59:59 2014 CreateFile failed on TAP device: \\.\Global\{837EB3C1-BA46-4C22-98A5-6DC6A9B8998B}.tap Fri Dec 12 16:59:59 2014 MANAGEMENT: Client disconnected Fri Dec 12 16:59:59 2014 All TAP-Windows adapters on this system are currently in use. Fri Dec 12 16:59:59 2014 Exiting due to fatal error[/color] In troubleshooting this so far, I have tried the following (not necessarily in this order): [list]* Uninstalled all virtualization software (Windows Virtual PC and Oracle Virtualbox) * Completely uninstalled and re-installed OpenVPN (removing the install directories) * Completely uninstalled and re-installed OpenVPN Connect (removing the install directories) * Downloaded and installed both from my access server "welcome" page, and openvpn project download page * Cleaned the registry of anything that mentioned "OpenVPN" * Validated that I can still connect from my laptop * Disabled & Re-enabled the TAP virtual device * Ran "addtap.bat" to create a second TAP virtual device [/list] But all to no avail... I did note that the network adapter on my Win 8.1 laptop that gets assigned the "remote" IP address is called "TAP Adapter OAS NDIS 6.0", whereas the one on my Win 7 desktop is called "TAP-Windows Adapter V9" (and "V9 #2")... so maybe I'm inadvertantly creating them through some different mechanism? Rather than post too much right now, I'll leave it at this and ask for ideas. I'll gladly share logs, config files, and other details as requested. Thanks in advance for your recommendations!

PLEASE HELP All TAP-Windows adapters... in use

JoeBartle2

Hello.

I am a relatively new user of OpenVPN - Thank you for your collective responses and guides that have been very helpful to me!

I installed OpenVPN Access Server 2.0.10 on a Ubuntu instance I have in the cloud. I've successfully connected using OpenVPN Connect 2.0.8.106 on a Windows 8.1 Pro 64-bit laptop, and have been able to access other private servers in that same cloud. However, when I tried to do the same thing from my Windows 7 Pro SP1 64-bit desktop, I've been troubleshooting for the better part of the day and am still unable to get past a particular issue, as seen in this log file excerpt:

Fri Dec 12 16:59:59 2014 CreateFile failed on TAP device: \\.\Global\{837EB3C1-BA46-4C22-98A5-6DC6A9B8998B}.tap
Fri Dec 12 16:59:59 2014 MANAGEMENT: Client disconnected
Fri Dec 12 16:59:59 2014 All TAP-Windows adapters on this system are currently in use.
Fri Dec 12 16:59:59 2014 Exiting due to fatal error

In troubleshooting this so far, I have tried the following (not necessarily in this order):

* Uninstalled all virtualization software (Windows Virtual PC and Oracle Virtualbox)
* Completely uninstalled and re-installed OpenVPN (removing the install directories)
* Completely uninstalled and re-installed OpenVPN Connect (removing the install directories)
* Downloaded and installed both from my access server "welcome" page, and openvpn project download page
* Cleaned the registry of anything that mentioned "OpenVPN"
* Validated that I can still connect from my laptop
* Disabled & Re-enabled the TAP virtual device
* Ran "addtap.bat" to create a second TAP virtual device

But all to no avail...

I did note that the network adapter on my Win 8.1 laptop that gets assigned the "remote" IP address is called "TAP Adapter OAS NDIS 6.0", whereas the one on my Win 7 desktop is called "TAP-Windows Adapter V9" (and "V9 #2")... so maybe I'm inadvertantly creating them through some different mechanism?

Rather than post too much right now, I'll leave it at this and ask for ideas. I'll gladly share logs, config files, and other details as requested.

Thanks in advance for your recommendations!

maikcat

TAP Adapter OAS NDIS 6.0 is created by openvpn AS client version and
TAP-Windows Adapter V9 is created by opensource one.

which version did you installed on your pcs?

Michael.

JoeBartle2

Thanks for your quick reply!

I installed the "TAP Adapter OAS NDIS 6.0" on the Win 8.1 laptop, and that one works great. I installed the "TAP-Windows Adapter V9" on my Win 7 desktop, and that's the one that doesn't work.

The very first time I connected from the laptop, I had not installed any client software and made the connection through the browser. I tried to do that on my desktop, but haven't been able to (and don't know why). It always wants me to download the client package, and once I install that, I get the V9 TAP adapters.

Is there some special "trick" or "sequence" I can use to get a browser-based connection?

Thank you!

Joe

maikcat

openvpn AS server requires you use AS client.

Please download and install AS client ONLY.

Michael.

JoeBartle2

Thank you again, Michael!

I uninstalled everything that I had loaded, and installed what I *thought* was the AS client (openvpn-connect-2.0.8.106.msi). Unfortunately, I received the same exact error, and there was still no "OAS NDIS 6.0" TAP Adapter showing up. Obviously, I didn't use the correct package.

I searched some more, and discovered the spot on github where the source is located, and wondered if I should try to download and build it myself? I also discovered the "HOWTO Desktop Client Configuration" which showed an example of making the connection direct from the browser, which I plan on trying tonight.

If you have any further suggestions or a link to where the correct Windows AS client was, I will certainly give them a try.

Many thanks!
Joe

JoeBartle2

Hello, again.

I do appreciate all the help I've received so far!

Since your last reply, and reviewing the article(s) about the AS Server & Client, here's exactly what I've tried.

a. Uninstalled all openvpn software - community as well as AS server/client.

b. Removed the entire "OpenVPN Technologies\OpenVPN Client" folder hierarchy

c. Ran a registry cleaner to make sure there were no traces of openvpn
(NOTE: at this point, I had neither the "TAP Adapter OAS NDIS 6.0" nor the "TAP-Windows Adapter V9" installed)

d. Ran a browser as Administrator and went to the host where OpenVPN server is running (ie, https://that-server-address)

e. Entered the test account name and password, chose "Connect" and clicked "Go"

f. Received a message requesting that I "click here to continue" to download OpenVPN Connect. I clicked.

g. When prompted, selected "Run" (The file it wanted to download was "openvpn-connect-2.0.8.106.msi")
(NOTE: this is the same file I had manually installed in my previous attempts)

h. A window appeared and the "OpenVPN Connect" software was installed. However, at this point, instead of the expected experience of starting to connect, I received a second dialog asking if I wanted to download the OpenVPN Connect app, and giving me a choice of platforms and corresponding links. (Windows, Mac, Android, iOS, Linux).
(NOTE: At this point, there are still no TAP adapters appearing in an "ipconfig/all". There is also no error log, yet,
although there is a "capi.log" file created)

i. Clicking on the "Connect" button pops up a confirmation dialog asking if I want to allow a VPN connection to my server?

j. I click on the affirmative and the original OpenVPN status window shows that I am "logging in", and then "obtaining configuration", and at that point, the tray icon indicates that I have been disconnected.

k. Now, if I check the log folder (C:\Program Files (x86)\OpenVPN Technologies\OpenVPN Client\etc\log), there's a file... and it contains:

Tue Dec 16 00:08:15 2014 CreateFile failed on TAP device: \\.\Global\{1F70FCB2-71CB-403A-B423-C5EF8AA9EE2F}.tap
Tue Dec 16 00:08:15 2014 MANAGEMENT: Client disconnected
Tue Dec 16 00:08:15 2014 All TAP-Windows adapters on this system are currently in use.
Tue Dec 16 00:08:15 2014 Exiting due to fatal error

And I am still missing any TAP adapters when I do an ipconfig/all.

======

Any ideas what I'm doing wrong would be really appreciated. Thanks !!

Joe