VirtualBox the windows of virtual machines list disappears - virtualbox

How can I show the windows of the virtual machine list again?
Like this:
The windows disappear

I was facing the same issue and was able to restore the list by deleting the configuration file under $HOME\.VirtualBox\VirtualBox.xml (Windows host)
On Linux and MacOS, the path should be something like
$HOME/.config/VirtualBox (Linux host)
$HOME/Library/VirtualBox (MacOS host)
I'm sure this is not the most elegant solution but it seems to restore the default settings wihtout hassle
Hope I could help, Cheers
JR
Edit: Annoyingly (albeit naturally) this also resets all kinds of pop-ups and warning that you might have to accept again...

Related

Shared clipboard and drag & drop bidirection function not working on Fedora 25 using VirtualBox

I've been trying to set up Fedora 25 in Oracle VirtualBox for the purpose of learning Linux Command Line. I need the bidirectional functionality for both copy/paste and drag/drop tools but even after installing Guest Additions correctly they still don't work.
If anyone knows how to resolve this issue I would greatly appreciate any feedback.
Thanks in advance.
Go to:
Settings->General->Advanced->
and change the setting under Shared Clipboard to "Bidirectional" and also Drag'nDrop setting to "Bidirectional."
In order for Shared Clipboard and Drag and Drop functionality to work, you need to ensure that the Virtual Box Guest Additions including the 'virtualbox-guest-x11' package.
This means that your Gnome session has to run (and work) under X11, and not the default Wayland session.

visual studio removes backslash from path, generated by cmake [duplicate]

We just did a move from storing all files locally to a network drive. Problem is that is where my VS projects are also stored now. (No versioning system yet, working on that.) I know I heard of problems with doing this in the past, but never heard of a work-around. Is there a work around?
So my VS is installed locally. The files are on a network drive. How can I get this to work?
EDIT: I know what SHOULD be done, but is there a band-aid I can put on right now to fix this and maintain the network drive?
EDIT 2: I am sure I am not understanding something, but Bob King has the right idea. I'll work with the lead web developer when he gets back into the office to figure out a temporary solution until we get some sort of version control setup. Thanks for the ideas.
While we do use Source Control, we do also run all our projects from Network Drives (not shared directories, private directories on network drives). The network drives are backed up nightly, and also use Volume Shadow Copy, so if you need to revert to something before it made it's way to SC, then you can.
To get projects to run correctly with the right permission, follow these steps.
Basically, you've just got to map the shared directory to a drive, and then grant permission, based on that Url, to all code. Say you map to "N:\", then use "N:\*" as your Url pattern. It isn't obvious you need to wildcard, but you do.
The question is rather generic so I'll give an answer to one issue I was facing.
I run Visual Studio 2010 using a Parallels virtual machine on my Mac while keeping all my projects on the mac side via a network share. Visual Studio however wouldn't load the projects assembly files from there. Trying to set the rights using "caspol" alone didn't help in my case.
What finally worked for me to allow Visual Studio to load assemblies from a network share was to edit the file
"C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE\devenv.exe.config" (assuming a default installation).
in the xml "<runtime>" section you have to add
<loadFromRemoteSources enabled="true"/>
You may have to change the permissions on that file to allow write access. Save the file. Restart Visual Studio.
In the interests of actually answering the question, I copied this comment from jcarle.com:
Trusting Network Shares with Visual Studio 2010 / .NET Framework v4.0
January 20, 2011, 4:10 pm
If you are like me and you store all your code on a server, you will have likely learned about trusting a network share using CasPol.exe. However, when moving from Visual Studio 2008 (.NET Framework 2.0/3.0/3.5) over to Visual Studio 2010 (.NET Framework 4.0), you may find yourself scratching your head.
If you are used to using the Visual Studio Command Prompt to quickly get to CasPol, you may find that some of your projects will not seem to respect your new FullTrust settings. The reason is that, unless you are carefully paying attention, the Visual Studio Command Prompt defaults to adding the .NET Framework 4.0 folder to its path. If your project is still running under .NET Framework 2.0/3.0/3.5, it will require setting CasPol for those versions as well. Just a note, I have also personally had more success with using 1 as a code group instead of 1.2.
To trust a network share for all versions of the .NET Framework, simply call CasPol for each version using the full path as below:
C:\Windows\Microsoft.NET\Framework\v2.0.50727\CasPol -m -ag 1 -url file://YourSharePath* FullTrust
C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol -m -ag 1 -url file://YourSharePath* FullTrust
I would not recommend doing that if you have (or even if you don't have) multiple people who are working on the projects. You're just asking for trouble.
If you're the only one working on it, on the other hand, you'll avoid much of the trouble. Performance is going to out the window, though. As far as how to get it to work, you just open the solution file from VS. You'll likely run into security issues, but can correct that using CASPOL. As I said, though, performance is going to be terrible. Again, not recommended at all.
Do yourself and your team a favor and install SVN or some other form of source control and put the code in there ASAP.
EDIT: I'll partially retract my comments. Bob King explains below the reason they run VS projects from a network drive and it makes sense. I would say unless you're doing it for a specific reason like Bob, stay away from it. Otherwise, get your ducks in a row before setting up such a development environment.
So I was having a similar issue. Visual Studio wouldn't recognize a network location I had mapped for a drive letter for anything. The funny thing is, it worked for a day. I set up my project and began working on it and had no issues. Then, I shut down and the next day nothing works. I couldn't read/write files in code, output my executables or anything. My project is local but my output was intended to be thrown up on the network.
Anyways, the problem is probably about the administrator context but one way to fix it which I found while digging around online is to get Visual Studio to browse to the drive in question some how. There are plenty of ways to do this but VS will magically be able to recognize mapped drive letters. My solution is to go the the Debug Output Location in the Project Properties, click browse and go to my previously made output location on my network drive and Voila!!!
I wanted to put this up because I spent half a day trying to figure this out and figured it might save someone else some time. Thanks much and good luck!!!
Erik
I understand this is an older thread, but this was the best thread I found when looking to solve a similar issue I had visual studio 2013 on a virtual box (using Win 8.1) and the code on the host machine (Win 7). Although I could open the solution, I could not compile. All of the other answers on this relate to older software, so I am adding this answer to update this frequently found question with the solution that worked for me.
Here's what I did; Made a registry entry to be able to use a UNC path as the current directory.
WARNING: Using Registry Editor incorrectly can cause serious, system-wide problems that may require you to reinstall Windows NT to correct them. Microsoft cannot guarantee that any problems resulting from the use of Registry Editor can be solved. Use this tool at your own risk.
Under the registry path:
HKEY_CURRENT_USER
\Software
\Microsoft
\Command Processor
add the value DisableUNCCheck REG_DWORD and set the value to 0 x 1 (Hex).
WARNING: If you enable this feature and start a Console that has a current directory of an UNC name, start applications from that Console, and then close the Console, it could cause problems in the applications started from that Console.
Found this information at link: http://support.microsoft.com/kb/156276
How about we rephrase this into a question that everyone can answer? I have the exact same problem as the initial poster.
I have a copy of VB 2008 (recently upgraded from VB6). If I store my solutions on the backed up network drive, then it won't run a single thing ever. It gives "partially trusted caller" errors for accessing a module, even when "allowpartiallytrustedcallers" is set in the assembly. If I store the files on my (not backed up) C:, then it will run wonderfully, until I put it on the share drive for everyone to use, and I'm back to my same problem.
This isn't a big request. I just want to be able to put a solution and executable on the share drive and run it without an absurd amount of nonsense about security. I shouldn't have to cram all my work into form files.
-Edit: I found the problem with why it was ignoring the AllowPartialllyTrustedCallers command. I'm trying to reference ADODB, which doesn't allow partially trusted. So, no network executable can access a database? What does Microsoft have against intranets anyway?
I was facing the same issue just recently so this answer is more for the sake of keeping track of my own knowledge. Anyway, should soumeone find it useful, below is the issue and the solution.
Issue:
NET 4.0 projects, SVN repo, checkout folders are on local drives, referenced assemblies are build by build server and available on a network drive. Visual studio on W7 is is able to add the reference but unable to build projects.
Solution:
Since NET 4.0 does not automatically provide a sandbox anymore for network assemblies, you have to make those full-trusted via machine.config update. http://msdn.microsoft.com/en-us/library/dd409252.aspx
I had a similar problem with opening Visual Studio projects on a network drive, and I fixed it by creating a symbolic link on my local C:\ drive that points to the UNC directory
e.g.
mklink /D "C:\Users\Self\Documents" "\\domain.net\users\self\My Documents"
then you can just open the project using the C:\Users\Self\Documents\ path, instead of the UNC path
(You have to be careful, because Visual Studio will automatically redirect you to the '\\domain.net..' path if you double click the symlink when you're browsing for the project. I had to copy paste the 'C:\Users\' path to get it to open with the drive letter path)
Don't do it. If you have source control (versioning), you do not want your files on a network drive. It totally bypasses all you want to achieve by using source control, because once your files are on a network drive, anyone can modify them .... even while you're currently building your project. Ka-boooom!
PS: this sounds like a typical case of over-engineering to me.
Are you having any specific problems?
If you allow more than one person to open the solution, your first problem will be that the .NCB file (Intellisense) will be locked exclusively and only one user will be able to browse the class tree. And of course you have the potential for one user's changes to overwrite the other user's changes.
You should be warned that some feature in Visual Studio will refuse to work with network drive.
For example, mdf file of SQL Express user instance must be located in local drive.
For another example, if you use UNC path, you have to make sure they are short enought.
i found this helpful while trying use vc11 with parallels which run on mac:
http://social.msdn.microsoft.com/Forums/en-US/toolsforwinapps/thread/2ffdcb01-c511-4961-834b-afd5f2fbb8e1, and specifically:
1) You can switch from local debugging to remote debugging and set the machine name as 'localhost'. This will do a remote deployment on your local machine (thus not using the project's directory). You don't need to install the Remote Debugger tools, nor start msvsmon for this to work on localhost.
In case this helps anyone else, I had to do the steps outlined here to add the network share location to Windows intranet zone. In particular, I was having trouble with Visual Studio hanging on load when opening a solution on a network share (i.e. using VMware Fusion and opening a solution from my Mac's hard drive). I also had problems with PostSharp running in this scenario.
If i understand you correctly, your Visual Studio project files are stored on the network drive and you are running them from there. This is what I do and don't have any problems. You will need to make sure that you have set the security policy. You can use Caspol to do this, or via the control panel-admin tools menu.
"How can I get this to work?"
You have a couple choices:
Choice A:
1. Move all files back to your local hard drive
2. Implement some type of backup software on your machine
3. Test said backup solution
4. keep on coding
Choice B:
1. Get a copy of one of the FREE source control products and implement it.
2. Make sure it's being backed up
3. Test it
Choice C:
Use one of the many ONLINE source control repositories available. Google, SourceForge, CodePlex, something.
Well, my question would be why you are asking this. Is it not working when you are storing it on a network drive? I haven't tried this myself, and one problem I could envision would be that .NET code running from a network drive (ie. from the bin\Debug directory, also located on the network drive) would be running in a sandbox mode, unless you mess around with CASPOL (or use 3.5 SP1 which I hear has removed that obstacle).
If you have specific problems, ask about them. Never ask "Why is doing X not working?".
You're not saying if you're just one person or multiple persons accessing the same remote drive, but I'm assuming you're just one for each network directory. Is this correct? If not, no, there is no band-aid. Get version control, move the files back to a local disk.

How can I install Qt onto another computer but in different directories?

I used the online download of Qt to install it on my desktop but now I also want it on my laptop and I am unsure of how I can do that without having to re-download. My internet connection is crap and I don't even know if the Laptop will allow me to considering that it is one issued by my school and not all downloads work. Please help! I tried copying all the files over to the laptop but now all the settings are weird because the computer I am using doesnt have (or allow access) to the C drive.
I've looked at where does an installed version of Qt store the paths.
It seems that you need to change the following:
Qt5.2.1/5.2.1/[compiler]/mkspecs/modules/qt_lib_[module].pri
In each of those files, change the line that begins with QT.[module].rpath.

How to debug a linux C++ program from Windows with Eclipse?

I use a headless (i.e. no screen) remote ubuntu server x64 for developping a C++ application (with no UI either).
I want to conveniently (IDE like, not command line) debug this program from windows (7/64), with Eclipse if possible. I have a windows share between the two and full root access on both machines.
So far I have heard of two solutions :
Remote gdb
Remote X server
I have worked on solution 1 : built a cross gdb, copied my program and libs on windows. I'm able to remote-gdb from cygwin command line, but not from eclipse (stuck at "launching... 85%" with no error message nor log)
I have also worked on solution 2 : installed xauth, set X forwarding, installed xming on my windows, set DISPLAY on the linux box. But no effect "can't open DISPLAY xxx" with no easy troubleshoot.
When googling for those problems, I only find outdated pages or different problems.
Did anyone do it ? Can you share advices or fresh pointers on how to remote debug a C++ linux app from Windows ?
I suggest to install an X11 server on your Windows machine (e.g. Xming perhaps?) and to do ssh -X with some X11 client applications (like emacs, ddd if needed, xterm) on your Linux server. Don't use a complex thing like Eclipse. You could just use emacs (remotely on the Linux server, displaying on the Windows desktop X11 server)...
Once emacs works well (running on the remote Linux server, displaying on the Windows desktop X11 server), you can run gdb inside it.
To get ssh -X working, you need to configure it appropriately. Maybe you forgot that step. To test it, just use ssh -X yourlinuxhost xterm, and work on configuration till that step works.
Of course you could also install Linux on your laptop or desktop, perhaps inside a virtual machine above your Windows.
NB. I never used Windows, but I do know that some X11 servers exist for it.
There is a eclipse plugin RSE (Remote System Explorer), it can pretty much do what you are expecting. The code base can be in linux server, eclipses uses telnet / ssh to login. Execution again can happen on a server, native gdb is used to debug.
You can use the following simple plugin for Eclipse.
http://marketplace.eclipse.org/content/direct-remote-c-debugging
It needs just ssh connection to the server and it cares about anything else

WMI CreateProcess - spawned exes are stalling

I'm using WMI's CreateProcess() to run an installation bootstrapper process (setup.exe) on a remote machine. The setup.exe is happily able to run .msi packages but for some reason it is not able to run the vcredist.exe packages that are used to redistribute the MS VS 2008 SP1 C++ Runtimes.
What I'm seeing is that the redist package is able to extract itself into a temp folder in the root of the C:\ drive, e.g. C:\a26f91763649ecad76a09d or some such, but after that the process hangs around.
I don't know what to do to debug further - I suspect that there is a modal dialog in the hidden windows station awaiting dismissal, but I can't see what the text is. Process Explorer isn't yielding much either.
Anyone got any suggestion? The problem applies equally in Windows 2000 as in Windows 2008. We used to use a DCOM-based method to launch setup.exe remotely and this did not exhibit the problem.
Can anyone shed any light on what might be going on, or how to diagnose further.
Many thanks,
Stephen
User error! My suspicion about the modal dialog was correct. It seems that invoking the setup.exe files with a relative path somehow caused the command line arguments to get stripped when passed to the nested exe, so they ran in full UI mode! Invoking with a fully-qualified path resolved the problem.