Tech Tips

I have spent too long recently trying to sign a UWP .MSIXBUNDLE generated from an Azure DevOps build using the SignTool.exe and our code signing certificate. I kept getting the error Done Adding Additional Store Error information: "Error: SignerSign() failed." (-2146958839/0x80080209) From past experience, SignTool errors are usually due to the publisher details in the XML manifest files (in this case unpack the bundle with MakeAppx.exe and look in AppxMetadataAppxBundleManifest.xml, and also check the manifest in the bundled .MSIX files) does not match the subject details for the PFX file being used for signing. ...

I am automating the process by which we keep our build agent up to date. The basic process is to use a fork of the standard Microsoft Azure DevOps Pipeline agent that has the additional code included we need, notably Biztalk. Once I have the Packer created VM up and running, I need to install the agent. This is well document, just run _.config.cmd –help _for details. However, there is no option to add user capabilities to the agent. I know I could set them via environment variables, but I don’t want the same user capabilities on each agent on a VM (we use multiple agents on a single VM). There was no documented Azure DevOps API I could find to add capabilities, but a bit of hacking around with Chrome Dev tools and Postman got me a solution, which I have provided a ...

The problem If you are like me for historic reasons you have multiple Azure DevOps organisations (instances) backed by the same Azure Active Directory (AAD). In my case for example: one was created when Azure DevOps was first released as TFSPreview.com and another is from our migration from on-prem TFS using the DB Migration Tools method; and I have others. I make active use of all of these for different purposes, though one is primary with the majority of work done on it, and so I want to make sure the inherited process templates are the same on each of them. Using the primary organisation as the master customisation. Note I have already converted all my old on-premises XML process models to inherited process templates. There is no out the box way to do keep processes in syncs, but it is possible using a few tools. The main one is the Microsoft Process Migrator for Node on GitHub. ...

This is another of those posts I do so I don’t forget how I fixed something. I have a requirement to record videos for a client in 720p resolution. As I use as SurfaceBook with a High-Res screen I have found the best way to do this is set my Windows screen resolution to 1280x720 and do all my recording at this as native resolution. Any attempt to record smaller portions of a screen or scale video in production have lead to quality problems, especially as remote desktops within remote desktops are required. ...

When I started creating OSS extensions for Azure DevOps Pipelines (starting on TFSPreview, then VSO, then VSTS and now named Azure DevOps) I made the mistake of putting all my extensions in a single GitHub repo. I thought this would make life easier, I was wrong, it should have been a repo per extension. I have considered splitting the GitHub repo, but as a number of people have forked it, over 100 at the last count, I did not want to start a chain of chaos for loads of people. ...

The Problem The documentation for the VSTS WIKI suggests you can embed a video in a VSTS WIKI using the markdown/HTML``` Problem is that this does not seem to work, the MP4 just does not appear, you get an empty video player. However, if you swap to a full URL it does work e.g. ### The Workaround The workaround is to either place the MP4 file in some URL accessible location e.g. some Azure web space (not really addressing the problem), or more usefully use the [VSTS API to get the file](https://docs.microsoft.com/en-us/rest/api/vsts/git/items/get?view=vsts-rest-4.1) out the repo that backs the WIKI. The format of the HTML tag becomes``` <video src="https://vstsinstance.visualstudio.com/MyTeamProject/\_apis/git/repositories/MyTeamProject.wiki/Items?path=\_media%2Fvstswiki\_high.mp4 width=400" controls> </video> ```This will get the current version of the file on default branch, you can add extra parameters to to specify versions and branches if required as per the [API documentation](https://docs.microsoft.com/en-us/rest/api/vsts/git/?view=vsts-rest-4.1). So not a perfect solution as you have to think about branches and versions, they are not handled automatically, but at least it does work

When you want to register a build agent with VSTS, you use the VSTS instance’s URL and a user’s Personal Access Token (PAT). Whilst doing this today I connected to the VSTS instance OK but got the error “Agent pool not found”.when I was asked to pick the agent pool to add the new agent to. As the user who’s PAT I was using was a Build Administrator I was a bit confused, but then I remembered to check their user access level. It was set to Stakeholder, once this was changed to Basic I was able to register the agent without use. ...

I have just rebuilt my first generation Surface Book from our company standard Windows image. These images are used by all our staff all the time without issue (on Surface and Lenovo devices), so I was not expecting any problems. I used to rebuild my PC every 6 months or so, but got out the habit when I moved to a model I could not swap the hard drive out of as backup during the process (using a new disk for new install). I got around this by using Disk2VHD, not quite as good as I can’t just swap the disk back in, but I won’t have lost any stray files, even though I always aim to keep data in OneDrive, Source Control or SharePoint, so it should not been an issue anyway. ...

Updated 3 July 2018 - A colleague, Andy Davidson, suggested mRemoteNG as an alternative tool to this address this issue. mRemoteNG also has the advantage that it support most major remoting technologies not just RDP, so I am giving that a try for a while. This is one of those post I do mostly for myself so I don’t forget how I did something, it is all based on answers on SuperUser.Com, I can claim no credit I have a SurfaceBook (first generation) and when I am in the office it is linked to an external monitor, with a different lower DPI, via a dock. If I use Remote Desktop (MSTSC) as built into Windows 10, I can drag sessions between the two monitors and the DPI shift is handled OK. However, if I use my preferred tool Remote Desktop Manager 2.7 (as it allow me to store all my commonly used RDP settings) I am in DPI hell. I either get huge fonts or microscopic ones. This is bad whether working on the single high DPI laptop screen work with an external screen. As the SuperUser.Com post states the answer is to change the compatibility settings for the manager by right clicking on the file “C:Program Files (x86)MicrosoftRemote Desktop Connection ManagerRDCMan.exe”, selecting compatibility, change high DPI settings, and unchecking high DPI setting override Once this was done, I have readable resolutions on all screens. Why did I not do a better search months ago? ...

Whilst writing some training material for VSTS I hit a problem creating a TFVC workspace. I was using VS2017, linking a TFVC Repo to a local folder. I was connecting to the VSTS instance using an MSA. In Team Explorer, when I came to do a ‘Map & Get’ to map the source locations I got a ‘TF14061: The workspace ws_1_18;Project Collection Build Service does not exist’ error Strange error, which I could see no obvious reason for. Turns out the work around was just to press the ‘Advanced’ link/button and accept the defaults ...