I receive the following when creating an app with on premise SQL Server connection.
Unknown Mashup Exception.
inner exception: Could not load file or assembly 'Microsoft.IdentityModel.Clients.ActiveDirectory, Version=2.28.1.741, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.
Where and how should I install the assembly?
Solved! Go to Solution.
Hi Cameron,
Funny, it's now working..!
I don't know what you did on your end, but here's what I did:
I also found out that there's already an ADAL's DLL in the On Premise Gateway folder. It's version is 2.28.3 .
But it seemed to be ignored by PowerApps, before. Or maybe it's the Gateway program that ignored it. I can only guess this, because of the error message and everything that happened.
So here's my recommendation to those who may experience the same thing:
Thank you very much for your help.
Hi Yohannes,
I think the issue here should be related with the on premise data gateway connection.
Could you please share more detailsabout the on premise SQL Server connection, are there any errors popped out when add this connection?
In addition, this exception occurred with PowerApp Studio, or PowerApp studio for Web?
Please follow the Troubleshooting part to check the gateway logs first:
Understand op-premises data gateways for Microsoft PowerApps
See if we could get any helpful information from there.
Also if you are using PowerApp studio, then please uninstall it and then reinstall it from Windows Store to check this issue again.
Further, in PowerApp, under Account->Diagnostics->Debug, you could be able to find the App logs, please check to see if any errors logged there.
Besides, Microsoft.IdentityModel.Clients.ActiveDirectory is Active Directory Authentication Library (ADAL), which provides a Portable Class Library with easy to use authentication functionality for your .NET client on various platforms including Windows desktop, Windows Store, Xamarin iOS and Xamarin Android by taking advantage of Windows Server Active Directory and Azure Active Directory. This Library could be installed through the Package Manager Console in Visual Studio, for more information, please see:
Active Directory Authentication Library
Regards
Thanks for responding.
I've checked other logs (in Event Log, Gatway*.log files, and so on. I only receive the one error message I posted earlier.
The exception occurs either using the web version or the desktop one.
I can't get PowerApps studio to recognize ADAL. If I installed it from Visual Studio, it's only accessible from within the current opened project in Visual Studio.
I've tried to put the .DLL files into .NET's gac but it didn't work; PowerApps studio reported that I'm using a wrong version of ADAL. I can only compile the latest version of ADAL, i.e. version 3.* to put in gac, but it seems that PowerApps was looking specifically for version 2.28.1.741 as it says in the error message. Visual Studio can't help me to compile the 2.28.* version.
PowerApps is working fine if I use it to access an SQL Server on Office 365 (cloud based). I also can create the gateway connection to our on-premise SQL Server. The exception occurs when I try to list the tables from our on-premise database as part of creating a new app.
Do you have more suggestions that might help? Thanks in advance..
Hi Yohannes,
Currently not. I will try to involve someone to take a further look into this issue.
There might be some time delay.
Appreciate your patience and understanding.
Regards
Thanks. But it's still not working.
I still receive the same message when I try to expand the database to reveal its underlying tables.
I include a snapshot here to make it clearer.
More tests below the picture ..
After this, I tried to do a nuget install package to get ADAL from nuget repository. The .dll was downloaded, but it's a 32-bit dll.
And PowerApps still fails to recognize its existence, even when it's added to gac.
Please help.
Hi Cameron,
Funny, it's now working..!
I don't know what you did on your end, but here's what I did:
I also found out that there's already an ADAL's DLL in the On Premise Gateway folder. It's version is 2.28.3 .
But it seemed to be ignored by PowerApps, before. Or maybe it's the Gateway program that ignored it. I can only guess this, because of the error message and everything that happened.
So here's my recommendation to those who may experience the same thing:
Thank you very much for your help.
How very curious... I'm glad this worked for you, and hopefully if others using the gateway run into this problem, perhaps this will be helpful.
Thanks!
-Cameron
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TUESDAY TIPS are our way of communicating helpful things we've learned or shared that have helped members of the Community. Whether you're just getting started or you're a seasoned pro, Tuesday Tips will help you know where to go, what to look for, and navigate your way through the ever-growing--and ever-changing--world of the Power Platform Community! We cover basics about the Community, provide a few "insider tips" to make your experience even better, and share best practices gleaned from our most active community members and Super Users. With so many new Community members joining us each week, we'll also review a few of our "best practices" so you know just "how" the Community works, so make sure to watch the News & Announcements each week for the latest and greatest Tuesday Tips! This Week's Tip: Power Up Your Profile! 🚀 It's where every Community member gets their start, and it's essential that you keep it updated! Your Community User Profile is how you're able to get messages, post solutions, ask questions--and as you rank up, it's where your badges will appear and how you'll be known when you start blogging in the Community Blog. Your Community User Profile is how the Community knows you--so it's essential that it works the way you need it to! From changing your username to updating contact information, this Knowledge Base Article is your best resource for powering up your profile. Password Puzzles? No Problem! Find out how to sync your Azure AD password with your community account, ensuring a seamless sign-in. No separate passwords to remember! Job Jumps & Email Swaps Changed jobs? Got a new email? Fear not! You'll find out how to link your shiny new email to your existing community account, keeping your contributions and connections intact. Username Uncertainties Unraveled Picking the perfect username is crucial--and sometimes the original choice you signed up with doesn't fit as well as you may have thought. There's a quick way to request an update here--but remember, your username is your community identity, so choose wisely. "Need Admin Approval" Warning Window? If you see this error message while using the community, don't worry. A simple process will help you get where you need to go. If you still need assistance, find out how to contact your Community Support team. Whatever you're looking for, when it comes to your profile, the Community Account Support Knowledge Base article is your treasure trove of tips as you navigate the nuances of your Community Profile. It’s the ultimate resource for keeping your digital identity in tip-top shape while engaging with the Power Platform Community. So, dive in and power up your profile today! 💪🚀 Community Account Support | Power Apps Community Account Support | Power AutomateCommunity Account Support | Copilot Studio Community Account Support | Power Pages
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