System.web.extensions where to find

It should be listed in the. NET tab of the Add Reference dialog. Assemblies that appear there have paths in registry keys under:. I have a key there named Microsoft. NET Framework 3. I had this problem myself. Most of the information I could find online was related to people having this problem with an ASP.

NET web application. I was creating a Win Forms stand alone app so most of the advice wasn't helpful for me. If this final step has failed and you're still encountering the error, you're only remaining option is to do a clean installation of Windows To avoid data loss, you must be sure that you have backed-up all of your important documents, pictures, software installers, and other personal data before beginning the process.

If you are not currently backing up your data, you need to do so immediately. Microsoft typically does not release Microsoft Office Access DLL files for download because they are bundled together inside of a software installer. The installer's task is to ensure that all correct verifications have been made before installing and placing System. An incorrectly installed DLL file may create system instability and could cause your program or operating system to stop functioning altogether.

Proceed with caution. You are downloading trial software. Subscription auto-renews at the end of the term Learn more. Download, Fix, and Update System. Average User Rating. All rights reserved. View Other System. What are System. Dynamic Link Library System. Cannot register System. Cannot start Microsoft Office Access Aaron Daniels Aaron Daniels 9, 5 5 gold badges 43 43 silver badges 58 58 bronze badges. The assembly was introduced with.

NET 3. Simply add a. NET reference to your project. Extensions If it is not there, you need to install. Oded Oded k 95 95 gold badges silver badges bronze badges.

Nai - Did you look at the. NET tab of the Add Reference dialog? It should be there. Oded Its not there man. Nai - I would restart visual studio and look again. Oded Thank for your help. I had to browse and add it manually using the path given by Aaron Daniels. Community Bot 1 1 1 silver badge.

Renae Renae 6 6 silver badges 15 15 bronze badges. Ben Ben 1, 15 15 silver badges 19 19 bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. User posted I didn't have a nested app, but this still fixed the problem for me. Wednesday, May 19, PM. User posted CarlosAg, Thanks for your post. Any ideas how to keep these 4.

Regards, -e. Monday, July 26, PM. And yes, the app pool runs on 4. Thursday, November 4, AM. Thursday, November 11, PM. User posted This is a common problem caused by the web. If you want to run it in. NET 4. Alternatively you could just change the application pool to run in. User posted For some reason by adding system. The solution is: 1. Monday, March 7, AM.

User posted I've experienced this error when running 32bit website applications in 64bit environment. Friday, August 26, AM. User posted While your solution didn't work for me, it got me on the right track so thank you. Assume that if I don't postback ack, nerd humor, lol that it worked for me.

Cheers ; p. WTH is up with the redonculous post text editor and syntax on this site?! Wednesday, November 2, PM. User posted Adding the section groups at the top solved this issue for us.

Thursday, May 3, AM. Tuesday, November 19, AM. User posted Try setting.