How to fix Visual Studio 2022 17.5 Intellisense not working

MelvynShepherd-9518 266

Visual Studio 2022 Enterprise Edition version 17.5.1

Intellisense and snippets are not working

Richard Shepherd 80 Reputation points

2023-03-06T21:41:58.1566667+00:00

This is a general problem that started with 17.5: intellisense, renaming, underlining all failing; GoToDeclaration etc all much slower. Possibly related to Boost (https://developercommunity.visualstudio.com/t/VS2022-175-C-Intellisense-fails-on-i/10291033?q=intellisense&sort=newest) though difficult to see why such a library should cause such widespread IDE problems. I guess Intellisense relies on an incremental compilation? Unfortunately, 17.5.1 didn't fix any of the problem
David O 45 Reputation points

2023-03-09T21:16:18.44+00:00

I've been having this exact problem with a C++ solution since updating to 17.5.
Alexander Filonov 25 Reputation points

2023-03-13T10:02:31.91+00:00

I confirm the same problem for me. Using Boost 1.72, 1.76, 1.81 in different projects via nuget packages from nuget.org. IntelliSense quickly fails on parsing boost headers, and all functionality becomes broken, making VS totally unusable.

Had to rollback to VS2019
Anna Xiu-MSFT 29,831 Reputation points Microsoft Vendor

2023-03-30T02:45:17.0166667+00:00

Hello everyone, please update your VS to the latest version with Visual Studio Installer and check if it works normally.
niico 45 Reputation points

2023-04-20T17:23:00.11+00:00

Same problem here. Not using script manager.
intellisense (eg pressing .) doesn't work on old OR new projects.
I've never heard of 'boost libraries', I'm probably not using them? I do C# 6 MVC and Blazor Server. It's broken in both.
Definitely looks like a problem with the latest update and needs fixing urgently!
Joe Hajek 5 Reputation points

2023-05-18T18:59:59.91+00:00

regularly breaks and doesn't work, just garbage basically
niico 45 Reputation points

2023-07-11T21:13:08.7733333+00:00

I've been having this problem across 2 different machines for a few months, always updating to latest VS, including right now.Latest update still hasn't fixed it. Intellisense still not working.
Palmer, Jared L 41 Reputation points

2023-09-29T14:31:05.3233333+00:00

I'm running 17.7.4 (which is up to date today) and intellisense is not working either. When will this be fixed?????
Licitec Software 0 Reputation points

2023-12-27T16:53:13.9066667+00:00

I also have issues with Intellisense in the current version of Visual Studio 2022 (17.8.3). It does not display parameters from a '.razor' added after linking to another page, in addition to other behaviors that degrade productivity.

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33 additional answers

Mattias Besemann 55 Reputation points

2023-10-31T20:35:14.4666667+00:00

In VS 17.7.6 IntelliSense is not triggering with a period, but it's still possible to trigger it by using Control + Space or Control + J.

EDIT: Wow I just realized somehow these 2 settings were unchecked (Options -> Text Editor -> C# -> General):

Everything is working again - replace C# with your language of choice.
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11 people found this answer helpful.
Richie 0 Reputation points

2023-11-03T13:25:06.22+00:00

This solved the problem for me. THANK YOU!

Tomáš Prokop 0 Reputation points

2024-01-15T14:56:48.8666667+00:00

Thank you so much.

David Madden 0 Reputation points

2024-01-25T00:20:04.03+00:00

The newest version as of 1/24/2024 and this still is the solution.

David Madden 0 Reputation points

2024-01-28T12:06:08.9466667+00:00

After I had run a repair it still did not work. Then after I uninstalled and reinstalled it did not work. The answer by Mattias is correct. You would think that these options would be on by default.

Aaron Kiander 20 Reputation points

2024-02-26T21:56:45.6233333+00:00

This fixed my issue thank you!

Rory Scanlan 0 Reputation points

2024-10-15T08:32:18.96+00:00

Still broken after update, this fixed it for me. Not sure how these options where disabled.
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MelvynShepherd-9518 266 Reputation points

2023-03-07T11:41:56.6833333+00:00

It works for new projects but not for previously created projects.
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2 people found this answer helpful.
MelvynShepherd-9518 266 Reputation points

2023-03-07T14:23:11.32+00:00

Deleting the bin and obj folders made no difference

David O 45 Reputation points

2023-03-13T15:33:26.1066667+00:00

It did not work in new C++ projects for me, nor did deleting the bin and obj folders.

Tú Nguyễn Mạnh 0 Reputation points

2023-03-24T02:55:56.9233333+00:00

I have similiar problem with normal AspNetCore MVC project. Can easily reproduce with simple steps:

create new project AspnetCore MVC

add code declare simple class javascript into wwwroot/js/site.js file, like

class RectangleP { constructor(height, width) { this.height = height; this.width = width; } }

in Index.cshtml file, try to declare a js variable use above class.

Can see the intelisence work well.

Close all file, close VS and reopen project

now back to work with js variable in index.cshtml file, no intelisen work.

I updated to latest VS2022 (17.5.3) and see that it isn't fixed.

niico 45 Reputation points

2023-06-25T14:54:07.4933333+00:00

I'm experiencing this in a project I created a week ago from the standard VS templates for Blazor Server
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PCz 10 Reputation points

2023-03-15T11:25:02.7733333+00:00

Hello,

I confirm the same problem. Boost libraries includes generaring problem since VS 2022 17.5 and continue with 17.5.2 and 17.5.2. For VS 2022 17.4.x worked fine. Latest BOOSt 1.81 in use, also checked on 1.78 - the same behaviour.

Multiple errors in detected in boost concpt_check.hpp causes Intellisense stop working however the user code compiles and generates all outputs correctly.
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Pacôme Danhiez 15 Reputation points

2023-06-04T15:03:25.6566667+00:00

Still not working with version 17.6 ……

I am stuck to version 17.4 for few months now.

please fix it,
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How to fix Visual Studio 2022 17.5 Intellisense not working

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