Call to a .NET Framework assembly on a network folder fails with error:
"Could not load file or assembly 'file://\\server\path\file.dll' or one of its dependencies. Operation is not supported. (Exception from HRESULT: 0x80131515)
In this particular case, I wanted to call an assembly with tests which had been deployed using Team Build to a shared folder, then use MSTest in the command line to run them.
MSTest behaved differently depending on whether it is being called from a Windows 2008 R2 Standard server or Windows 8 Client. Using the following command line:
MSTest /testcontainer:\\server\path\file.dll /detail:debugtrace /detail:traceinfo
- From Windows 8 client, user as local administrator: command works as expected. It loads the tests and executes them.
- From Windows 2008 R2 Standard, user as a local administrator: command fails with the following message:
Could not load file or assembly 'file://\\server\path\file.dll' or one of its dependencies. Operation is not supported. (Exception from HRESULT: 0x80131515)
Further troubleshooting using 1) a mapped drive 2) PowerShell 3) /testcontainer parameter between quotes show that all these would also fail under Windows 2008 R2 Standard.
The error “Could not load file or assembly” (0x80131515) is a catch-all error. For instance, it is also reported when the exe or dll was downloaded from an unsafe zone. This is fixed by right-clicking the assembly and choosing “Unlock” from the General tab. Sometimes the “Unlock” option won’t show, and in this case it wasn’t.
Blocking is done based on a Zone Identifier alternate stream that is added to a file when it is copied from the Internet. To validate that the file is actually blocked, display this Zone Identifier using the following command (note the direction of the “<” sign – the opposite one would erase the file):
more < file.dll:Zone.Identifer
If ZoneId = 3 or 4, your file is blocked. In our case, the files show no alternate Zone.Identifier stream.
Since copying the files locally to a folder in the Window 2008 R2 Standard server allowed MSTest to execute the tests, this showed that the issue was constrained to some security policy differences between Windows 8 and Windows 2008 R2 Standard. This also confirmed that the files were not blocked.
Next step I looked into the .NET Framework security policy configuration. Using the instructions from this Microsoft blog post I modified the CAS policy settings using the following command prompt:
CasPol.exe -m -ag 1.2 -url file://\\server\path\file\* FullTrust
This added the following record into the CAS policy (CasPol.exe -l):
1.2. Zone - Intranet: LocalIntranet
1.2.1. All code: Same site Web
1.2.2. All code: Same directory FileIO - 'Read, PathDiscovery'
1.2.3. Url - file://\\server\path\file\*: FullTrust
This did not resolve the issue as expected, but the following error started to be reported on the Event log:
Log Name: Application
(MSTest, PID 2000, Thread 1) AssemblyEnumerator.EnumerateAssembly threw exception: System.IO.FileLoadException: Could not load file or assembly 'file://\\server\path\file.dll' or one of its dependencies. Operation is not supported. (Exception from HRESULT: 0x80131515)
File name: 'file://\\server\path\file.dll' ---> System.NotSupportedException: An attempt was made to load an assembly from a network location which would have caused the assembly to be sandboxed in previous versions of the .NET Framework. This release of the .NET Framework does not enable CAS policy by default, so this load may be dangerous. If this load is not intended to sandbox the assembly, please enable the loadFromRemoteSources switch. See http://go.microsoft.com/fwlink/?LinkId=155569 for more information.
By following the link recommended in the log, I got more information on the issue and how to solve it with the configuration switch loadFromRemoteSources.
From MSDN documentation:
“In the .NET Framework version 3.5 and earlier versions, if you loaded an assembly from a remote location, the assembly would run partially trusted with a grant set that depended on the zone in which it was loaded. For example, if you loaded an assembly from a website, it was loaded into the Internet zone and granted the Internet permission set. In other words, it executed in an Internet sandbox. If you try to run that assembly in the .NET Framework version 4 and later versions, an exception is thrown; you must either explicitly create a sandbox for the assembly (see How to: Run Partially Trusted Code in a Sandbox), or run it in full trust.
The <loadFromRemoteSources> element lets you specify that the assemblies that would have run partially trusted in earlier versions of the .NET Framework are to be run fully trusted in the .NET Framework 4 and later versions. By default, remote assemblies do not run in the .NET Framework 4 and later […]. If you set enabled to true, remote applications are granted full trust.
If <loadFromRemoteSources> enabled is not set to true, an exception is thrown under the following conditions:
- The sandboxing behavior of the current domain is different from its behavior in the .NET Framework 3.5. This requires CAS policy to be disabled, and the current domain not to be sandboxed.
- The assembly being loaded is not from the MyComputer zone.”
And, in the same article:
In the .NET Framework 4.5, assemblies on local network shares are run as full trust by default; you do not have to enable the<loadFromRemoteSources> element.
This part of the documentation also shows why it worked on Windows 8: .NET Framework 4.5 is the default for Windows 8.
For validation purposes, I originally applied the recommended setting to machine.config, which is too wide. Later I tested with just MSTest.exe.config and it also worked, which is a smaller recommended scope.
[Verified] Add the following entry to the MSTest.exe.config file (at C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\IDE):
[According to documentation] Use .NET Framework 4.5.
Say you created a field and by mistake, there was a typo in one of the allowed values:
<FieldDefinition name="FieldToTestLowerUpperCase" refname="Custom.FieldToTestLowerUpperCase" type="String">
<LISTITEM value="Out of scope" />
<LISTITEM value="Value 1" />
<LISTITEM value="Value 2" />
What you really wanted was “Out of Scope”, not “Out of scope”:
<FieldDefinition name="FieldToTestLowerUpperCase" refname="Custom.FieldToTestLowerUpperCase" type="String">
<LISTITEM value="Out of Scope" />
<LISTITEM value="Value 1" />
<LISTITEM value="Value 2" />
Using Process Editor, even if you modify and republish the value, it does not change the casing.
I have been able to replicate your scenario with Process Tools Editor within VS 2013 Update 3 and TFS 12.0.30723.0 (Tfs2013.Update3).
I deleted the field using Process Editor to take it out of a custom Task, and then deleted it in the command line with witadmin:
then re-added it using Process Editor with the right case (“Out of Scope”) and told it to rebuild the cache (“witadmin rebuildcache”). It still did not work, it still kept the same value.
I applied a simple change (add an extra space between “of” and “Scope”, saved it) and the new one had the uppercase plus the extra space (“Out of Scope”). Then I modified the new field to use just a single space, rebuilt the cached, but it returned to using lowercase (“Out of scope”).
To see whether it was a bug with Process Editor, I did all operations using just witadmin in a command line prompt. It still did not work: even after an update, I would retrieve the work item definition and it would show the word “scope” in lowercase.
This value was cached somewhere, and not being able to update it is definitely a bug. By looking into the Fields table I confirmed that nothing really is deleted, only marked as deleted, and most likely it is reused when the value is reinserted. In addition, when a field AllowedValues is changed, the Import method (either using Process Editor, witadmin or the API) does not consider casing when checking whether the value needs to be updated.
I found the “Out of scope” value in the TFS Constants table (within the collection database):
PartitionId, ConstID, DomainPart, fInTrustedDomain, NamePart, DisplayPart, String, ChangerID, AddedDate, RemovedDate, SID, Cachestamp, ProjectID, TeamFoundationId, fReferenced
WHERE (DisplayPart = 'Out of scope')
ORDER BY DisplayPart
Next I manually updated it to “Out of Scope”, and refreshed. This fixed the issue.
ATTENTION: Do this at your own risk, as modifying TFS tables directly is neither recommended nor supported, and might put your database in an unsupported state. I tested this on a sample TFS installation, which is not in production.
I only provided this workaround as a last resort and because it was a simple enough update of a string value. A better, supported path would be to open a case with Microsoft support using your MSDN incidents, and have it escalated to the Product Team as a Bug (I might also open a bug with Connect later, and will post the link here).
To use Delphi-based UIs with Coded UI tests you would need to implement the MSAA interface for each component you would want to use/have it visible with Coded UI. Example implementations:
The Coded UI extensibility framework works mostly with MSAA compliant applications (http://msdn.microsoft.com/en-us/library/dd380742.aspx). However, if you can’t get the Delphi source code and enable MSAA, you will have to do with the plain Windows Win32 support (http://msdn.microsoft.com/en-us/library/dd380742.aspx ).
Is it possible to build a plug-in or add-on in .NET using Coded UI extensibility for identifying Delphi (VCL) UI controls native properties (like id, control name)? As mentioned before, it is the UI control itself that has to expose MSAA compliant properties to be visible, that is, the TEdit or TForm needs to implement it. However the documentation on how to used CodedUI with Silverlight states the following:
“To test your Silverlight applications, you must add Microsoft.VisualStudio.TestTools.UITest.Extension.SilverlightUIAutomationHelper.dll as a reference to your Silverlight 4 application so that the Silverlight controls can be identified. This helper assembly instruments your Silverlight application to enable the information about a control to be available to the Silverlight plugin API that you use in your coded UI test or is used for an action recording.”
If I understand this correctly, it might be possible to do the same for Delphi CLR .NET applications at the assembly level (I have not seen any reference implementation on how to do this though). For applications compiled to native code you would have to go to the source as explained above.
When launching a test from MTM, either manual or automated, it would get the message, MTM does not launch Test Runner and fails to do anything. The following error message was added to the Event Log after failure:
<Provider Name="VSTTExecution" />
<Data>(mtm.exe, PID 16168, Thread 1) Exception: System.IO.FileNotFoundException
Message: Could not load file or assembly 'Microsoft.VisualStudio.TestTools.UITest.WindowsStoreUtility, Version=184.108.40.206, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.
We tried running it from another computer to isolate the Visual Studio Ultimate as the issue. It worked on another computer with Visual Studio Ultimate 2013 Update 3. The failing computer had Visual Studio Ultimate Update 2.
Root cause was not determined. Installing Update 3 fixed it.
The Austin TFS Users Group leadership team has weekly meetings over the phone to plan, develop and deliver bimonthly presentations based on community activities, and we welcome presenters who have ongoing practical experience with implementing ALM with TFS. Please send us an email if you are interested, or let us know at one of our meetings.
The leadership team had just had our quarterly face-to-face meeting on July 17th at Chez Zee on 5406 Balcones Dr., Austin, TX. In the picture below we have, from left to right:
George Altenbaugh, Amanda McConville, Tim Pacl, Clementino de Mendonça, and Joe Murphy. Missing from the picture is Bob Hardister, who could not attend because of a last minute impediment at work.
For the record: our team did not use user group funds for lunch: each person paid their own meal.
Example on how to handle IT support communications with a blog:
When using a TFS 2013 task backlog with more than 500 items, the following message is displayed:
You have exceeded the number of items allowed on your task board. The number of items to be displayed on the task board is: 578. This exceeds the allowed maximum of: 500. This maximum limit is configurable.
To resolve this issue, you can perform one of the following tasks:
· Reduce the number of items included in the current sprint.
· Your project administrator must increase the maximum number of allowed items.
You follow the second link, and you are taken to the following page which has outdated information:
Refer to the updated information for TFS 2013:
Although a user is already part of a TFS group, he can't access TFS work items (source code is fine), and TFS Web client/Visual Studio display the following message:
TF201072: A user or group could not be found. Verify that the users and groups used in your work item type defiition have been added to Team foundation server.
The cause is related to some snag in the TFS identity synch service, and it is usually related to a specific collection. There are many articles on the web which help determine the root cause, so here we are only focusing on a fast workaround.
Attaching and re-attaching the collection will force a refresh of the identity synch data, and will usually resolve the issue.
- Use an XML editor with syntax highlight (such as Notepad++)
- Process Editor (PE) is behind in editing modern features, so edit raw XML to access all features
- PE was created by the TFS process team, and it does not leverage the same code as Process Template Manager when exporting XML, therefore the two generate different formats, both in attributes and node order.
- PE does not handle bool data type, nor the new XML definitions for backlogs.
- Use an XML diff tool (such as Microsoft's XMLDiff)
Backlogs have long been used to organize work. I could go back as early as Benjamin Franklin writings on how he dealt with practicing a list of mental virtues in an iterative, incremental fashion.
However I would like to point out two more recent examples, the first one in this post, followed by another post on the second one.
Not many are aware of how Steven Spielberg operated when developing his first block buster, Duel. It was shot in a relentless pace, just sixteen days, at a total cost of $425,000 – after all it was originally a TV movie. Its quality though attracted enough audience that allowed it to be released in Europe and Latin America as a theatrical release, and two years later it also came to movie theaters in the United States as well. Brode’s description of Spielberg’s approach is fascinating as anyone who practices Agile today would recognize what he was doing (my inline comments between s):
[Spielberg] became involved during the time period when Matheson [the original story author] was writing the script, though Spielberg did not consult with him during the writing process. Methodically he blocked out the entire film on IBM cards [the backlog], the first time he tried what would become his regular approach. Each card contained the gist of the scene, the angle he would take on it, and how many camera setups he needed. While filming in Lancaster, he assembled those cards on a huge bulletin board in his motel room [the task board]. Rather than opening the script to the day’s page, he would instead take down several cards. They constituted the day’s work [daily iterations – after all it was sixteen day project], and when each scene was finished, he would tear the card up and throw it away, knowing every night, by glancing at the bulletin board, how much was left to complete.
In addition to cards, he had his art director sketch the entire film on one long mural that arced around the motel room, an aerial view portraying every moment in the movie [the user story map], including chases. Never a great reader, Spielberg liked to avoid referring to his script and memorizing blocks of words, preferring to study this visual panorama, locking himself into it before filming any one day.
The films of Steven Spielberg, by Douglas Brode
I brought this extract to show that using backlogs has always been a way of working in the minds not only of software developers under a delivery pressure, but also of the general public. Well, at least for smaller projects – the DOD distortion field that swept the 70’s leading to Waterfall stems from the need of extra planning big projects under extreme risk pressure.
Hopefully this example shows how people while thinking create new ideas, which are eventually formalized as a best practice (I will bring that up on the next post related to backlogs), and finally automated in a tool such as Team Foundation Server 2013.
Where did Spielberg have the idea of using IBM punch cards? Maybe by interacting with friends at the university Computer Science department? If you happen to have a chance, please ask Spielberg for me.