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• Error code 2503 - Cannot install software on Windows 7 (64Bit)

  - by SixfootJames

  A short while ago, I had my hard drive die on me and at the same time my 1Tb backup drive! I took it back to the guy I bought the PC from and although the backup drive could not be recovered, he managed to get my machine working again by making a minor change in the BIOS which then got it out of that continuous loop it found itself in after multiple BSOD episodes. Everything seems to be working fine but yesterday when I tried to save something from Google Chrome, I got and insufficient permission problem and when I try to install software, I get an error of 2503. I have already followed the suggestions here but none of this worked for me. Any suggestions would be appreciated. EDIT: This started happening after I tried running a number of tests to get the machine working, including a previous restore point.

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• How do you override the warning "filename is not commonly downloaded" for a specific file?

  - by Oliver Salzburg

  There is a specific file on a customers server which I require to connect to one of their services. The contents of the file are confidential and the file is not intended for the public. Thus, the file is not "commonly downloaded", and every time I need to download it, I get this warning: I have to download that files sometimes multiple times a day (the contents of the file change periodically) and, every time, I have to click through this little annoyance. The Phishing and malware detection page only explains how to disable the feature completely, which is not what I want at all. Can I disable this feature for a single given URL?

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• SFTP not working, but SSH is

  - by Dan

  I've had a server running CentOS for a few months now. A few days ago, I stopped being able to connect to it over SFTP. I've tried from multiple computers, OSes, clients, and internet connections. I can SSH in just fine, though. For example, Nautilus gives me this: Error: DBus error org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken. Please select another viewer and try again. I was under the impression that SFTP was just pure SSH, and if one worked, the other would, and vice-versa. Clearly that's not the case, though. What could I have done wrong?

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• How to build an API on top of an existing Rails app with NodeJs and what architecture to use?

  - by javiayala

  The explanation I was recently hired by a company that has an old RoR 2.3 application with more than 100k users, a strong SEO strategy with more than 170k indexed urls, native android and ios applications and other custom-made mobile and web applications that rely on a not so good API from the same RoR app. They recently merged with a company from another country as an strategy to grow the business and the profit. They have almost the same stats, a similar strategy and mobile apps. We have just decided that we need to merge the data from both companies and to start a new app from scratch since the RoR app is to old and heavily patched and the app from the other company was built with a custom PHP framework without any documentation. The only good news is that both databases are in MySQL and have a similar structure. The challenge I need to build a new version that: can handle a lot of traffic, preserves the SEO strategies of both companies, serve 2 different domains, and have a strong API that can support legacy mobile apps from both companies and be ready for a new set of native apps. I want to use RoR 3.2 for the main web apps and NodeJs with a Restful API. I know that I need to be very careful with the mobile apps and handle multiple versions of the API. I also think that I need to create a service that can handle a lot IO request since the apps is heavily used to create orders for restaurants at a certain time of the day. The questions With all this in mind: What type of architecture do you recommend me to follow? What gems or node packages do you think will work the best? How do I build a new rails app and keep using the same database structure? Should I use NodeJS to build an API or just build a new service with Ruby? I know that I'm asking to much from you guys, but please help me by answering any topic that you can or by pointing me on the right direction. All your comments and feedback will be extremely appreciated! Thanks!

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• Git Repo to mantain the app configurations in several servers

  - by user62904

  Hi! I need to versioning in a GIT repository, configurations of a particular platform, spread across multiple servers. Take into account that in each of these servers there are completely different configurations, while the application is the same. What is the best way to do this? Create a branch for each server repository.git:conf -- [branch Server 1] repository.git:conf -- [branch Server 2] repository.git:conf -- [branch Server N] Note: This method seems to me, that is difficult to maintain because each change in the server configurations, I need to create subbranches which becomes confusing. Create a single repo with a different directory for each server repository.git:conf/Server 1 repository.git:conf/Server 2 repository.git:conf/Server N Note: This is easy to mantain Create a repo for each server repository_1.git:conf repository_2.git:conf repository_N.git:conf Note: This method requires me to create a branch for each new server. There are other methods, what are the best practices in this case? Should I use the one that I feel most comfortable? Tks, Gulden PT

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• VMWare Lab Manager: What's the best way to build Library Configurations?

  - by mcohen75

  We're using Lab Manager within our QA group. We use it to quickly deliver environments we need for testing. We have 25 Templates, 14 Library Configurations and counting. To build up our templates we: Create a base template that is a bare bones version of Server 2008 + basic configuration (Windows Update, Firewall exceptions) Create a linked clone for each Server template we need (SQL Server 08, 05, etc) Repeat for other OS's, like Windows 7 and Windows XP Then we create configurations: Create a workspace configuration with multiple images in it (Say Server 08 w/SQL Server and Windows 7) Deploy the configuration and make some minor configuration changes Undeploy and Capture to Library How do we keep this manageable? When I need to update a configuration, should I: Rebuild it from templates Clone it to a workspace, make changes, recapture it to the library keep the configuration in my workspace (don't delete it after capturing it to library), deploy it to make changes and then re-capture to library

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• Open file without specifying exact location

  - by person

  Say I have a file in some obscure directory that I want to open and edit. I don't want to do something like this... vim ~/foo/bar/blah/doh/ugh.txt I'd rather be able to say find this file and open it. I know there are commands like locate and find to find a file or directory, but I'm not sure whether these can (or even should) be utilized in what I'm trying to do. Basically, what is the simplest way to open a file with a program w/o specifying its exact location? (In cases where there isn't another file with the same name in the entire system, and cases where there are multiple).

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• MVVM and service pattern

  - by alfa-alfa

  I'm building a WPF application using the MVVM pattern. Right now, my viewmodels calls the service layer to retrieve models (how is not relevant to the viewmodel) and convert them to viewmodels. I'm using constructor injection to pass the service required to the viewmodel. It's easily testable and works well for viewmodels with few dependencies, but as soon as I try to create viewModels for complex models, I have a constructor with a LOT of services injected in it (one to retrieve each dependencies and a list of all available values to bind to an itemsSource for example). I'm wondering how to handle multiple services like that and still have a viewmodel that I can unit test easily. I'm thinking of a few solutions: Creating a services singleton (IServices) containing all the available services as interfaces. Example: Services.Current.XXXService.Retrieve(), Services.Current.YYYService.Retrieve(). That way, I don't have a huge constructor with a ton of services parameters in them. Creating a facade for the services used by the viewModel and passing this object in the ctor of my viewmodel. But then, I'll have to create a facade for each of my complexe viewmodels, and it might be a bit much... What do you think is the "right" way to implement this kind of architecture ?

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• Need help with the naming convention for an incremental variable [closed]

  - by iStryker

  I am using a voting module, that allows you vote either up or down [or reset]. If you vote up, the value is +1. If you vote down, the value is -1. If you vote up then down, the value is -1. I want to extend this module to allow you to vote multiple times, and the votes to be incremental. Examples Up, Up = +1, +1 = +2 Up, Up, Down = +1, +1, -1 = +1 I want to create a new boolean variable. If FALSE/NULL then use the old system +1/-1. If TRUE, voting will be incremental. What should be the name of this variable be? I feel 'incremental' is not the correct name. This module is part of an open-source project and is used on 3,177+ websites, so I want to get the naming convention right. Naturally, I'll be setting an upper and lower limit the variable be. [ie 5 & 0] Side-question: Is there a mathematics term to describe something being either +1/-1?

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• How do I block a single css file from being loaded with firefox or chrome?

  - by Tim Santeford

  I want to be able to block one css file from loading on my system. The site has multiple sheets that I do want to load but it has one hideous theme.css file that I just have to get rid of. I would prefer to use Chrome but FF is ok too. A system wide ban on the file would be ideal. I want to specify a single url that the computer becomes incapable of fetching it. I will then use stylish to create my own replacement. BTW its a SharePoint theme and it has way too many rules to have to override. Thanks

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• After installing Windows 8, boot hangs before BIOS setup

  - by Joe Purvis

  I have an Alienware M15x, 940MX processor, 16 GB RAM, 512GB M4 SSD, and I was running Win7 64bit. I backed up the disk and ran Win 8 setup. Setup appeared to go well through multiple reboots. After the last reboot, it simply stopped after POST at "Press F2 for bios setup". I have tried powering off, reducing RAM to one stick, removing MOS battery. Now, it gets to the screen with "Press F2 for setup" and "Press F12 for boot options". If I press F2, I get a single beep only. If I press F12, nothing. I cannot get into the BIOS to change boot options to boot from another disk and restore. I do have the latest BIOS. I am going to try replacing the CMOS battery, but I don't think that is likely to help. The computer has been fast and very reliable until now.

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• Which topics do I need to research to enable me to complete my self-assigned "Learning Project"?

  - by Anonymous -

  I want to continue learning C#. I've read parts of a few books recommended on here and the language is feeling more familiar by the day. I'd like to tackle a mid-sized personal project to take my expertise to the next level. What I'd like to do, is create an application that 'manages expenses', that runs on multiple machines on a LAN. So for example, say we have person1 and person2 on seperate machines running the application, when person1 enters an expense, it will appear on person2's (pretty UI) view of the expenses database and vice versa. What topics do I need to research to make this possible for me? I plan on learning WPF for the UI (though the steep learning curve (or so I'm told) has me a little anxious about that at this stage. With regards to the database, which database would you recommend I use? I don't want a 'server' for the database to run on, so do I need to use an embedded database that each client machine runs a copy of that updates to each other (upon startup/entering of expense on any machine etc)? What topics under networking should I be looking at? I haven't studied networking before in any language, so do I need to learn about sockets or?

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• How to do integrated testing?

  - by Enthusiastic Programmer

  So I have been reading up on a lot of books surrounding testing. But all the books I've read have the same flaws. They will all tell you the definitions of testing. But I have not found a single book that will guide you into integration testing (or pretty much anything higher then unit testing). Is integration testing that elusive or am I reading the wrong books? I'm a hands on person, so I would appreciate it if someone could help me with a simple program: Let's say you need to make some sort of calculation program that calculates something (doesn't matter what) and exports it to *.txt file. Let's assume we use the Model View Controller design principle. And one class for the actual calculating which you'll use in the model and one for writing the textfile. So: View = Controller = Model = CalculationClass, FileClass So for unittesting: You'd test the calculationClass, I'd personally focus most of my unit tests there. And less time on unit testing the view/controller/FileClass. I personally wouldn't see the use of unittesting those unless you want a really robust program. Integration testing: Now this is where I run into a wall. What would I have to test to call it an integration test? I could stub the view and feed the controller data which it would pass on to the model and so forth. And then check what the view gets back in the end. But ... Couldn't I just run the (in this case small) program then and test it manually? Would this be considered a integration test too, or does it have to be automated? Also, can I check multiple items to see if they are correct? I cannot seem to find any book that offers a hands on approach to methods of integration testing.

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• How to tune Windows 2008r2 and IIS to maximize single file download speeds?

  - by uSlackr

  We recently put up an IIS site (on WinSvr 2008r2) that is used almost exclusively for downloading files over the internet. The data exists as a large collection of .zip files ranging from 1MB - 35GB in size. We want to allow a lot of downloads during a day (more than 500GB) but have implemented an outbound ASA throttle at 60mbps in order to preserve bandwidth for other uses. The total link speed is 100mbps. Here's the interesting part: While we can serve up multiple downloads to hit the 60mbps cap, we cannot get any single download to exceed 2.5M bytes/sec (20 Mbits/s). Is there any TCP or IIS tuning we can do to push up individual download speeds? Or something else to look at?

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• PHP and load balancing

  - by StCee

  I have one major domain but the server spec behind it is not good enough. Hence I want to relay the traffic, in particular php-mysql queries to multiple smaller servers. How is that normally be done? (BTW I wonder how much traffic or number of php/mysql request a normal setup on ec2 micro instance can handle? ) I did have a look of EC2 load balancer. But is it only possible to load balance on machines of your own account?

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• Manage a lot of open ssh sessions to servers with id's for hostname

  - by kimausloos

  Lately I'm working a lot with a few open ssh connections to multiple VPS servers. The hostnames of the servers all follow an ID approach and it's becoming very difficult to know on what machine I'm working with. I was wondering if there is a way to put a name I define somewhere as the title of the terminal. So I would, for example, associate IP 123.123.123.123 with webserver-stg. When opening the connection to the IP, webserver-stg would automaticaly be displayed as the name of the session. Of course I'm not able to change code on the VPS servers, so the solution should be client-side.

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• I want to easily switch accounts for Twitter - is there a Firefox/Chrome/IE plug-in to do this?

  - by Edelcom

  I have several Twitter accounts to which I post messages. One is a personal, one is a professional, and a couple for each software system I developed. Does any one know of a plug-in for one of the major web browses on Windows or program that allows me to easily login to multiple Twitter accounts and easily switch between them ? I now have the 4 major browsers installed on my computer , each with it's own Twitter account (with the password and login info saved), but I think there must be a better way. On a side note: it is getting harder and harder to know to which StackOverflow alike site a question must be posted. So I hope this question here is considered on-topic.

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• ISCSI sessions appear from nowhere

  - by Maraca

  Hi, I am using Win2008 32bit Ent. running in Hyper-V with 2 LUNs over ISCSI connection (this is a MS cluster with one LUN being quorum and second as a storage). In ISCSI - target - details I see multiple sessions from same target (currently 7), however I am not sure where they are coming from as I have only one virtual NIC on this server. Sure enough 2 LUNs appear 7 times each in device manager or in disk manager. On the cluster partner however, I do not see that problem. There is only one session per target. Installing MPIO makes only difference - I am getting 8 sessions instead of 7 once I reboot. Does any one know what can cause this behavior?

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• In developing a soap client proxy, which return structure is easier to use and more sensible?

  - by cori

  I'm writing (in PHP) a client/proxy for a SOAP web service. The return types are consistently wrapped in response objects that contain the return values. In many cases this make a lot of sense - for instance when multiple values are being returned: GetDetailsResponse Object ( Results Object ( [TotalResults] => 10 [NextPage] => 2 ) [Details] => Array ( [0] => Detail Object ( [Id] => 1 ) ) ) But some of the methods return a single scalar value or a single object or array wrapped in a response object: GetThingummyIdResponse Object ( [ThingummyId] => 42 ) In some cases these objects might be pretty deep, so getting at properties within requires drilling down several layers: $response->Details->Detail[0]->Contents->Item[5]->Id And if I unwrap them before passing them back I can strip out a layer from consumers' code. I know I'm probably being a little bit of an Architecture Astronaut here, but the latter style really bug me, so I've been working through my code to have my proxy methods just return the scalar value to the client code where there's no absolute need for a wrapper object. My question is, am I actually making things more difficult for the consumers of my code? Would I be better off just leaving the return values wrapped in response objects so that everything is consistent, or is removing unneccessary layers of indirection/abstraction worthwhile?

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• Named my RPi 512MB @jerpi_bilbo

  - by hinkmond

  To keep our multiple Raspberry Pi boards apart from each other, I've now named my RPi Model B w/512MB: "jerpi_bilbo", which stands for Java Embedded Raspberry Pi - Bilbo (named after the Hobbit from the J.R.R. Tolkien stories). I also, set up a Twitter account for him. You can follow him at: @jerpi_bilbo He's self-tweeting, manual prompted so far (using Java Embedded 7.0 and twitter4j Java library). Works great! I'm setting him up to be automated self-tweeting soon, so watch for that... Here's a pointer to the open source twitter4j Java library: download here Just unzip and extract out the twitter4j-core-2.2.6.jar and put it on your Java Embedded classpath. Here's how @jerpi_bilbo uses it to Tweet with his Java Embedded runtime: import twitter4j.*; import java.io.* public final class Tweet { public static void main(String[] args) { String statusStr = null; if ((args.length 0) && (args[0] != null)) { statusStr = args[0]; } else { statusStr = new String("Hello World!"); } // Create new instance of the Twitter class Twitter twitter = new TwitterFactory().getInstance(); try { Status status = twitter.updateStatus(statusStr); System.out.println ("Successfully updated the status to: " + status.getText()); } catch (Exception e) { e.printStackTrace(); } } } That's all you need. Java Embedded rocks the RPi! And, @jerpi_bilbo is alive... Hinkmond

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• Encrypt two drives with Truecrypt with password before boot

  - by Deshroom

  i'm using laptop and PC with single HDD with full disk encryption. I know how works truecrypt on single drive because i use it everyday. My second laptop has 2 HHDs. My question is how to encrypt first 128GB SSD and second 1TB HDD in same way. I have multiple applications installed on second drive so i want to have it accessible during boot in ex. Steam in installed on second drive and it starts with windows. How to do it? can i encrypt two drives in truecrypt and unlock it via password before boot? My main reason is i want to RMA laptop without removing disks or data - my data need to be encrypted. Thank you.

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• ESXi onboard SATA passthrough [on hold]

  - by lodge93

  I am running ESXi 5.5 on a home system. When I attempt to pass one of the onboard SATA controllers (Intel ICH10R) to a VM, it is successful. However, the controller never appears in the VM. What else am I missing that would cause a VM to not recognize the controller? Additional Info: The controller is set to AHCI mode in the BIOS Prior to setting up the controller for passthrough, ESXi did recognize the controller and the drives I have tried with multiple VMs, none of which recognized the controller or the attached drives I have two onboard SATA controllers, on controller for ESXi and one for passthrough The final ideal state is that I could passthrough the controller to a FreeNAS VM

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• High-level description of how experimental C++ features are developed?

  - by Praxeolitic

  Herb Sutter in a video answers a question about the concepts proposal considered for C++11 and from his remarks it sounds like multiple groups offered prototype implementations but all of them left concerns about slow compile times. The comment surprised me because it suggests that, at least in some cases, the prototypes being developed are not just proofs of concept -- they're even expected to perform. All the work that must take has me curious. For mature languages, especially C++, how are experimental language features developed? Is it much different from developing a compiler that implements a standard? Does a developer have a sense of if it will work and perform or even if it ever could? What are the most time consuming parts and are any parts surprisingly easier than one might expect? The question is not what does the C++ standards committee do, but rather the part that comes before. When an experimental implementation for a proposal is being put together and there aren't any completely solidified rules, how is the sausage made? I'm not a professional compiler developer nor do I expect answers with step by step accounts. I'd like a high-level idea of how this would be done or if there are any general patterns at all. I don't know what to expect from the answers but even if there are no rules to the process and the small number of people who do this just cowboy it and then, for stuff that worked out, write up the "official version" as a proposal, that answer would still be informative.

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• How to keep programs from source up to date?

  - by wizard

  I'm designing a new server setup for hosting multiple websites. (Shared hosting for my clients over at SliceHost.) I've recently moved away from the traditional LAMP setup and chosen Ubuntu, Nginx, php-fpm and mysql. I like it a lot better then my old Apache, suphp, mysql setup. It works great, provided encapsulation between sites and uses substantiallly less memory. However I have one major maintenance problem. In order to have a recent version of Nginx and in order to use php-fpm I've had to compile these programs from source. The reason I see this as a problem is that keeping track of updates, and build configurations will end up being a lot of work. For two programs (and a patch) I can handle it, but it seems like this setup would not scale with many packages and servers. Are there good ways to manage this situation? I'm sure people do this all the time.

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• Firefox and internet explorer not reponding, but chrome works fine.

  - by Mick

  I have been using multiple browsers successfully for years, but now I seem to have run in to a problem. When I run firefox or IE, they appear to start up, but the mouse pointer just permanently turns into an eggtimer, and I can do nothing else with them. Task manager shows them as "not responding". I then have to use task manager to "end task". I tried re-installing firefox, but that made no difference. Google chrome works fine. Any ideas what could be happening?

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