ReSharper Cannot resolve symbol even when project builds

Question

My Tools   Visual Studio 2012 Ultimate   Update 1  ReSharper v7 1 25 234  My Solution Build Status  Build Successfully  But when I install ReSharper and ReSharper code analysis is enable  many keywords of my code are red with this error    Cannot resolve symbol XXX       Another picture of my project     The ReSharper    CANNOT RESOLVE SYMBOL    errors are everywhere  but my project build process is successfully  and it works correctly     Additional Note  If I disable ReSharper Code Analysis  my project will be Normal  but I want to use ReSharper code analysis     I tried ReSharper   Options   General   Clear Cache  But I still have this problem      One month ago  I got these errors when I uninstalled Visual Studio 2012 RC and installed VS 2012 RTM  I ve already uninstalled and installed ReSharper again  But I have this problem yet  My solution has five projects    two loaded projects  main project   resource project  and three unloaded projects     I realize that my Visual Studio also has bigger problems  More information on Stack nbsp Overflow    I can t add any reference to my projects  even inside new solutions and new projects  I can t install any package  by  Packet Manager Console  or Manage NuGet Package  I can t update any package  by  Packet Manager Console  or Manage NuGet Package    I ve done a lot of suggestions  of myself and others    Re-resister some DLL files Using some windows and registry repair tools Remove ReSharper Repair Visual Studio and      But I could not solve it   I m thinking of installing a new Windows       What is wrong  and how can I fix it

User · Answer

I also saw similar problems reported in ReSharper which did not lead to compile/runtime errors.

These were mostly seen when using "{x:Type ...}" or "{x:Static ...}" markup, causing ReSharper to report "Cannot resolve symbol 'Type'" or "Cannot resolve symbol 'Static'" errors.

Additionally there were many errors like "Invalid markup extension type: expected type is '<type>', actual type is '...Extension'".

The problem resolved itself when I added a reference to the System.Xaml assembly.

User · Answer

I ended up needing to request Resharper to clear its cache along with doing it manually through Windows File Explorer   This finally resolved the issue for me     As reported in many of the solutions here  RESHARPER   Options      Environment   General   Clear Caches    Close Visual Studio    Go to this path in File Explorer for Resharper 10 in Visual Studio 2015    localappdata  JetBrains Transient ReSharperPlatformVs14   Delete all subfolders and their contents within that folder    Restart Visual Studio  reload your Solution and wait for Resharper to initialize itself for the Solution

User · Answer

I tested ALL of the other answers in this page  before writing this answer  such as    VS - gt  Tools - gt  Options - gt  ReSharper Suspend button and Resume  Clear ReSharper cache  And others    But unfortunately none of them solved my problem  Maybe my problem was complicated than your problem  I said about them in my EDITs in the question  then the following answer was correct solution for me but maybe other answers solve your problem  please test them first  I was forced to reinstall my OS and use a newer version of my tools     Now i use VS 2013   R  v8 and when i have any problem with my resharper i just try the following instruction and it solve my problems   VS - gt  Tools - gt  Options - gt  ReSharper Suspend button and Resume

User · Answer

I have the same problem Clean Resharper cache and Suspend Resharper not worked for me I just close visual studio  uninstall Resharper and then install Resharper the problem was gone

User · Answer

I had the same problem  VS 2017   In my case it was different versions of target framework - one assembly targeted 4 52  another 4 62 - after setting those to the same version in both assemblies it started working again

User · Answer

It s usually happen by config file corrupt or wrong detect  Just delete  vs folder  restart VS to reset config  It will work almost case

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For me for VS2015  I had to update Resharper to version 2016 2 2 to resolve the issue    I had already tried  of which none worked for me     suspending   resuming suspending   clearing cach  using tools   options button    resuming suspending   clearing cach  using Windows file system    resuming moving cache to solution folder   restarting visual studio many other combinations of all or some of above   I hope that may help someone

User · Answer

I had the same issue and unloading and reloading problematic project helped me to clear out this issue for ReSharper  Hope this helps

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I was having the same issue in my Visual Studio 2015 with Resharper Ultimate and tried the solutions as suggested above  but none worked for me    Then upgrading Resharper to latest release solved my issue

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This worked for me  VS2012u4  R  7 1 3     Resharper   Options   Environment  General   Clear Caches Restart Visual Studio

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For me  inspecting the solution gave me hundreds of errors  including many  cannot find file in search paths   I tried every suggestion out there to fix it and none of them worked  I ended up finding out inspecting the project  instead of the solution  worked perfectly

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No soft caches removal solutions worked for me  it looks like there were issues generated between different RS versions installed over the years   What worked for me was    Uninstal resharper  remove all JetBrains folders within AppData Local and AppData Roaming  Install resharper again   All the settings need to be redone  etc but I couldnt get any better solution even with help of JetBrains team

User · Answer

I m using 7 1  and this worked for me     Uninstall resharper go to  appdata  and remove JetBrains Resharper and    Local JetBrains Resharper folders re-install resharper

User · Answer

I was referencing a NetStandard2 0 project that didn t get recognized by R   I cleared the caches but that did not help me    Downloading the latest version and updating R  did work for me   This is the version I m now running   JetBrains ReSharper Ultimate 2017 3 2  Build 111 0 20180201 63358 ReSharper 2017 3 20180201 111630   Just download R  and it will recognize already installed versions  Updating to the latest version is really easy

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I just want to report my solution in case anyone has the similar situation as I do  I have Visual nbsp Studio nbsp 2013 with update 5 and ReSharper 8 2 3  My project is ASP NET MVC 5   Normally  I m good at keep updating my extension packages  Just recently  I found out all my views are red and showing  cannot resolve view xxxx   I tried the clear cache and suspend ReSharper and resume ReSharper solution  but the error will come back once I build the project    I checked my ReSharper extensions  and then I uninstalled the resharper ExternalAnnotations package  8 2 3005  and re-install the previous version from gallery  8 2 3000 5176    This seems to have fixed my problem

User · Answer

We saw this problem as well  specific to files which were shared by multiple projects  There is a combo box in the upper left corner of the editor window that lets you switch project context for the file  and hence the references that impact symbol resolution    Resharper makes it easy to accidentally open the wrong  version  of a shared file by its  go to file or symbol  commands     Switching context back to the project I use in the solution was all I needed to do to fix this issue

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This was happening to me with Visual Studio 2015 and ReSharper Ultimate 10 0 2   I tried pretty much all the solutions written prior to this answer  apart from any reinstallations  and nothing worked   I got it working again with a variety of the above steps in a very specific order    ReSharper   Options   Environment   General   Clear Caches   this must be done before suspending ReSharper as otherwise this option is unavailable this clears out the files in C  Users YourUsername AppData Local JetBrains Transient ReSharperPlatformVs14 v04 as mentioned in some other posts  Tools   Options   ReSharper Ultimate   Suspend Close Visual Studio   this actually performs the ReSharper cache clear  Open Visual Studio Open the solution   I waited for Visual Studio to detect there were no code issues in IntelliSense and may have performed a build at this point   Tools   Options   ReSharper Ultimate   Resume   Hopefully after the last step you can breathe a sigh of relief that you don t have to reinstall anything  I certainly did

User · Answer

This happens in ReSharper when you have two different versions of the same library in your solution  For example project A references automapper version 1 1 and project B references automapper version 1 0   Visual Studio will often compile and run as expected in the situation as it chooses one of the DLLs to bind to  However ReSharper gets massively confused  For me this should be a ReSharper error that it asks you to resolve rather than just going bonkers   UPDATE   I ran into this two days ago  a day after I made this post  by total coincidence and came across this link where they say that it is caused by a bug in the VS API  I tried everything that they recommended and was unable to resolve it even temporarily  I had Autofac 2 6 x that I d downloaded from google code and then swapped it over for the NuGet package version and it willfully refused to see the new reference no matter what I did    They suggest installing the R  8 EAP but for me it was less hassle to just downgrade to the old version of Autofac   Not much in the way of help  but maybe useful

User · Answer

I my case  I tried all the suggestions above  But  at some point I realized that the problem persists even if Resharper is suspended  So  I looked for similar problem in VS itself and found the solution in the comments for the accepted answer in this SO post   I m listing my steps for brevity    VS -  Tools -  Options -  ReSharper Suspend button  Build solution  Notice all references still unresolved Clean the solution Restart VS Build the solution without Resharper  Notice all references resolved VS -  Tools -  Options -  ReSharper Resume  button

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For me  I think my solution just got caught in a weird state when I was changing which branch of my local Git repo I was on  Simply switching to the previous branch I was on before the problem started  telling VS to reload all the files  then switching back to the desired branch and reloading again fixed it

User · Answer

I was just having the same issue with ReSharper 8 2 in Visual Studio 2013  and none of the usual solutions here of clearing caches  suspending ReSharper or re-installing ReSharper was working   In my case I ended up solving it as follows    I looked at one of the symbols that it couldn t resolve and noted it was in System Web Http dll   I then found that this was in the Microsoft AspNet WebApi Core NuGet package   I used the package manager console to try and uninstall that package  except of course it told me that it couldn t due to other dependencies   So I uninstalled each dependency up to and including Microsoft AspNet WebApi Core  and then re-installed each package again in the reverse order   ReSharper picked everything up correctly as it was installed  and now seems fine

User · Answer

Resharper -  Options Caches -  Store solution caches in   Change folder to another one    Or try to manually clean up R  cache folder

User · Answer

I had similar problems and cleared the caches found at    AppData Local JetBrains ReSharper v7 1 SolutionCaches  Solved the problems for me  Running VS2012 u3

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I also had this problem  All previous solutions did not help for me or helped for a very short time  In my case  the problem was that I connected the  Net Framework 4 7 2 project to a project that has version 4 5 2  After I updated both projects to version 4 7 2  the problem was resolved  I think that to solve the problem you need to have the same version of the projects  Or connect a smaller version to a larger one  but not vice versa  as was the case in my case

User · Answer

It should be a problem related to Resharper cache  but as far as I know  the  clear cache  feature works only if your cache is in Solution Folder  To check try this  Visual Studio   Tools   Options   Resharper   Options      In Resharper Options window   Environment   General  check that  Store solution caches in  it s set to  Solution folder   After this in solution folder you should see a new folder   ReSharper Caches   You should be able to clean it by pressing the  Clear caches  button  but  if this doesn t work  you can clean manually by removing inside files  in this case  Visual Studio has already to be closed    Restart Visual Studio and everything should work  Have a look here  1  as well   1  https   resharper-support jetbrains com hc en-us articles 206546989-ReSharper-stopped-working-for-a-single-specific-solution  Note  Visual Studio 2015 Update 1   ReSharper 10 0 2

User · Answer

I am using VS2015  R 10  None of the suggested solution worked for me  I deleted the contents of the bin folder of my solution and rebuild the entire solution  that seems to have resolved the issue  Before deleting the contents of the bin folder  I had tried suspending and resuming R   doing clear cache from R  -  option -  general setting  and also manually deleting the contents from  AppData Local JetBrains Transient ReSharperPlatformVs12 v01 SolutionCaches   Hope it helps someone

User · Answer

Above links of clearing the cache and or suspending the ReSharper did not work for me  I just  refreshed  the project  which was showing this problem  from the solution explorer and the problem goes away  Sadly  it keeps on recurring and only option it to keep on refreshing every time this problem recurs   I have VS2012 with ReSharper 8 1 on Windows 8

User · Answer

As you see  the solution is what everyone has already mentioned - simply by Suspending ReSharper  then Clearing the Caches  and finally Resuming it  But  no one mentioned how to do it without closing restarting Visual Studio  Just follow these steps   Getting ReSharper Cache Location  Manually by going to ReSharper Options  gt  Environment  gt  General  gt  Store Solution Caches in  Combo Box   marked 2 in the image   Selecting Custom Folder  then Copying the location of the Caches Folder from the text box shown  marked 3 in the image   Reverting the settings back  The 1 marked shows the ClearCache Button  It s usually wouldn t work so leave it     Suspending ReSharper  You can do this by going to Tools  gt  Options  gt  ReSharper Or ReSharper Ultimate  gt  Suspend Now  Button     Clearing the Cache  Go to the location copied earlier in step 1 and delete everything in that folder  And yes  I do mean everything    Resuming ReSharper  You can do this by again going to Tools  gt  Options  gt  ReSharper Or ReSharper Ultimate  gt  Resume  Button

User · Answer

Try Visual Studio   menu Tools   Options   ReSharper  Suspend button and Resume again  no need to close the window   This works in my case

User · Answer

I did everything above with no fix   Then I did a step from another SO Q A  don t remember which one  which was to set System Web Mvc to Copy Local true  Recompile my project and the errors went away    When I set this assembly back to Copy Local false  the errors didn t return

User · Answer

I had the same issue where the project compiles fine  even after clean  amp  build   but intellisense complains about missing references   I tried everything from deleting the cache and disabling resharper  but nothing worked  In the end  I realized it was only a single project reference that showed intellisense errors   My solution was to simply remove the reference to this project and add it again Everything worked as expected afterwards

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When I disabled ReSharper  Visual Studio was also giving the same error  even though the project built successfully  What I did to resolve the issue was    Remove the project from the solution  Right-click the solution  Add Existing Project  select the project file and add it again    After performing these steps  the syntax errors went away in Visual Studio  and after I enabled ReSharper again  it also had no errors

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I tried all of the above solutions numerous times but none worked for me  I was using Visual Studio 2015 with ReSharper 9 0    I was able to resolve this by upgrading to ReSharper 9 2  If you already have the latest update for your major version  maybe reinstalling ReSharper might fix this for you  I would suggest clearing you ReShaper cache first  just in case   Here s the link to the archive versions of ReSharper   https   resharper-support jetbrains com hc en-us articles 207242355-Where-can-I-download-an-old-previous-ReSharper-version-

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I had a similar issue  In my case  the length of my project path was too long for windows  above 248 characters    My solutions compile okay in VS 2017 but ReSharper couldn t find the references  Interestingly I had an error in the Error Window even if the build was a success    Severity    Code    Description Project File    Line    Suppression State Error   MSB3491 Could not write lines to file  obj Debug netcoreapp2 1 My Long Path Project Name csproj CoreCompileInputs cache   The specified path  file name  or both are too long  The fully qualified file name must be less than 260 characters  and the directory name must be less than 248 characters  My Long Path Project Name   C  Program Files  x86  Microsoft Visual Studio Preview Enterprise MSBuild 15 0 Bin Microsoft Common CurrentVersion targets  3430   So I shortened the project path and ReSharper worked okay

User · Answer

What helped in my case after several of the suggestions above didn t    Removed one project reference  of one of the libraries where ReSharper claimed not to be able to find it even though it was correctly referenced   Use ReSharper   s  Resolve  on one of its usages to add the reference again    After that  it worked fine  even though none of the project files were actually modified in the process

User · Answer

VS - gt  Tools - gt  Options - gt  ReSharper Suspend button  Clear Contents of - gt  AppData Local JetBrains ReSharper v7 1 SolutionCaches VS - gt  Tools - gt  Options - gt  ReSharper Resume  button

User · Answer

Clear Resharper cache  Resharper -  Options -  General -  Clear Caches  close and reopen the solution  It worked in R  9 0 Update 1

[c#] ReSharper "Cannot resolve symbol" even when project builds

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