Visual Studio C IntelliSense not automatically displaying

Question

Just recently  my Visual Studio 2010 stopped displaying IntelliSense suggestions automatically while I am typing   I can still press ctrl space to get it to work  but it doesn t automatically show a list of suggestions like it used to   I have already tried disabling all my extensions  restarting VS and the computer  and I have checked all the appropriate settings  Options -  Text Editor -  C  -  IntelliSense  to make sure that it is set to offer suggestions after a character is typed   Has anyone seen this behavior before   Does anyone have any other suggestions for how I can get IntelliSense to go back to the way things were before   If not  I might just have to do a fresh reinstall of VS

User · Answer

Steps to fix are         Tools       Import and Export Settings       Reset all settings       Back up your config       Select your environment settings and finish

User · Answer

Deleted the  suo file in solution folder to solve the problem

User · Answer

A new cause for this in the  net core era is having a project loaded for an unsupported  net core version  For instance if you loaded a project from GitHub that was set to use      lt PropertyGroup gt       lt TargetFramework gt netcoreapp2 2 lt  TargetFramework gt       lt AspNetCoreHostingModel gt InProcess lt  AspNetCoreHostingModel gt     lt  PropertyGroup gt    But you only have 2 1 installed or find yourself using Visual Studio 2017 then the compiler wont be able to find the SDK code and thus provide intellisense   The solution in that case might be to right click on your project and select Edit MyProject csproj from the context menu and change the target framework as necessary      lt PropertyGroup gt       lt TargetFramework gt netcoreapp2 1 lt  TargetFramework gt       lt AspNetCoreHostingModel gt InProcess lt  AspNetCoreHostingModel gt     lt  PropertyGroup gt    This assumes whatever project you loaded can actually be run under a lesser target framework

User · Answer

I have just come to about this problem while installing one of the extensions and its file was deleted by my anti virus so I just disabled my anti virus and reinstalled visual studio  Suggestions are working properly without any changes made after installation

User · Answer

I hit this today after the following sequence    Added a new class to my project  Closed Visual Studio  but accidentally selected No when it asked if I wanted to save changes  Reopened Visual Studio  and found that it reopened the new file automatically but without my previous changes  as expected   However  IntelliSense was no longer working in the new file    The problem was in addition to not saving changes to the new file  it didn t save changes to the project  so after reopening Visual Studio the file was not part of the project  The Show All Files command in Solution Explorer  or Add  rarr  Existing Item     resolved the problem

User · Answer

I had the file excluded from the project so i was not able to debug and have intellisense on that file  Including the file back into the project solved my problem

User · Answer

I simply closed all pages of visual studio and reopened   it  worked

User · Answer

I also faced the same issue but in VS2013   I did the below way to fix  It was worked fine    Close all the opened Visual studio instance  Then  go to  Developer command prompt  from visual studio tools  Type it as devenv exe  resetuserdata Restart the machine  Open the Visual studio then It will ask you to choose the development settings from initial onwards  thereafter open any solution project  You ll be amazed    Hope  it might helps you

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I ll start off my noting that this hasn t happened since I upgraded my RAM  I was at 4GB and would often have multiple instances of VS open along with SSMS  I have since gone to 8GB and then 16GB   Here s the steps I go through when I lose intellisense   If only one file window appears to be affected  close reopen that file  If that doesn t work  try below   In Visual Studio    Click Tools- Options- Text Editor- All Languages- General  Uncheck  Auto list members   Uncheck  Parameter information   Check  Auto list members   yes  the one you just unchecked   Check  Parameter information   again  the one you just unchecked  Click OK   If this doesn t work  here s a few more steps to try    Close all VS documents and reopen If still not working  close reopen solution If still not working  restart VS     For C   projects  MSDN has a few things to try  MSDN suggestions  The corrupt  ncb file seems most likely   From MSDN    Close the solution  Delete the  ncb file  Reopen the solution   This creates a new  ncb file     Notes    This issue does not appear to be specific to C  as C   and VB users report the same issue Tested in VS 2013 2015

User · Answer

In prose  in case you can t see the above image   Open Tools   Options   Text Editor  If you re only having this issue with one language  find that language  if it s for everything  click  All Languages   Right at the top  there ll be a few options labeled  Auto list members    Hide advanced members   and  Parameter information   Make sure all of those are enabled  though the second may be disabled  if so  ignore it

User · Answer

This may be due to the solution configuration changed to Release Mode instead of debug  Right click on solution -  Properties -  Configuration Properties -  Set Configuration To Debug if it is in Release

User · Answer

Closed all my VS windows Started the Visual Studio Installer and clicked  Modify    Under  Individual components     Code Tools    Deselected NuGet package manager and re-selected it   After modifying and restarting VS  IntelliSense was working correctly again    Found my answer on https   developercommunity visualstudio com content problem 130597 unity-intellisense-not-working-after-creating-new-1 html

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I have found that at times even verifying the settings under Options --  Statement Completion  the answer above  doesn t work  In this case  saving and restarting Visual Studio will re-enable Intellisense   Finally  this link has a list of other ways to troubleshoot Intellisense  broken down by language  for more specific errors    http   msdn microsoft com en-us library vstudio ecfczya1 v vs 100  aspx

User · Answer

At the bottommost right look at the blue line where Ln  Col  Spaces  UTF  CRLF       here the language is specified  Check that your language and the language specified there are the same  In my case  it was Django Python while I was trying to use HTML

User · Answer

Deleting the  vs folder in the solution solved my issue  You have to exit from Visual Studio and then delete the  vs folder and start Visual Studio again

User · Answer

Sometimes i ve found Intellisense to be slow   Hit the   and wait for a minute and see if it appears after a delay   If so  then I believe there may be a cache that can be deleted to get it to rescan

User · Answer

Tools -  Options -  Text Editor -  All Languages -  CodeLens  Check if check box  Enable CodeLens  is checked

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