Error: Code 2021 - One or more operators in the filter expression is [email protected] a valid list of operators refer to the help [email protected]@[email protected]@@1.

How to fix the Runtime Code 2021 One or more operators in the filter expression is invalid

This article features error number Code 2021, commonly known as One or more operators in the filter expression is invalid described as One or more operators in the filter expression is [email protected] a valid list of operators refer to the help [email protected]@[email protected]@@1.

About Runtime Code 2021

Runtime Code 2021 happens when Microsoft Access fails or crashes whilst it's running, hence its name. It doesn't necessarily mean that the code was corrupt in some way, but just that it did not work during its run-time. This kind of error will appear as an annoying notification on your screen unless handled and corrected. Here are symptoms, causes and ways to troubleshoot the problem.

Definitions (Beta)

Here we list some definitions for the words contained in your error, in an attempt to help you understand your problem. This is a work in progress, so sometimes we might define the word incorrectly, so feel free to skip this section!

  • Expression - Combination of several programming symbols and values intending to produce a result
  • File - A block of arbitrary information, or resource for storing information, accessible by the string-based name or path
  • Filter - A program or routine that blocks access to data that meet a particular criterion
  • List - list may refer to: a linked list an ordered set of nodes, each referencing its successor, or a form of dynamic array
  • Operators - Operators are symbols that occur in nearly all programming and coding languages, for performing calculations and comparisons on data.

Symptoms of Code 2021 - One or more operators in the filter expression is invalid

Runtime errors happen without warning. The error message can come up the screen anytime Microsoft Access is run. In fact, the error message or some other dialogue box can come up again and again if not addressed early on.

There may be instances of files deletion or new files appearing. Though this symptom is largely due to virus infection, it can be attributed as a symptom for runtime error, as virus infection is one of the causes for runtime error. User may also experience a sudden drop in internet connection speed, yet again, this is not always the case.

Fix One or more operators in the filter expression is invalid (Error Code 2021)
(For illustrative purposes only)

Causes of One or more operators in the filter expression is invalid - Code 2021

During software design, programmers code anticipating the occurrence of errors. However, there are no perfect designs, as errors can be expected even with the best program design. Glitches can happen during runtime if a certain error is not experienced and addressed during design and testing.

Runtime errors are generally caused by incompatible programs running at the same time. It may also occur because of memory problem, a bad graphics driver or virus infection. Whatever the case may be, the problem must be resolved immediately to avoid further problems. Here are ways to remedy the error.

Repair Methods

Runtime errors may be annoying and persistent, but it is not totally hopeless, repairs are available. Here are ways to do it.

If a repair method works for you, please click the upvote button to the left of the answer, this will let other users know which repair method is currently working the best.

Please note: Neither nor it's writers claim responsibility for the results of the actions taken from employing any of the repair methods listed on this page - you complete these steps at your own risk.

When you get a runtime error, keep in mind that it is happening due to programs that are conflicting with each other. The first thing you can do to resolve the problem is to stop these conflicting programs.
  • Open Task Manager by clicking Ctrl-Alt-Del at the same time. This will let you see the list of programs currently running.
  • Go to the Processes tab and stop the programs one by one by highlighting each program and clicking the End Process buttom.
  • You will need to observe if the error message will reoccur each time you stop a process.
  • Once you get to identify which program is causing the error, you may go ahead with the next troubleshooting step, reinstalling the application.
Using Control Panel
  • For Windows 7, click the Start Button, then click Control panel, then Uninstall a program
  • For Windows 8, click the Start Button, then scroll down and click More Settings, then click Control panel > Uninstall a program.
  • For Windows 10, just type Control Panel on the search box and click the result, then click Uninstall a program
  • Once inside Programs and Features, click the problem program and click Update or Uninstall.
  • If you chose to update, then you will just need to follow the prompt to complete the process, however if you chose to Uninstall, you will follow the prompt to uninstall and then re-download or use the application's installation disk to reinstall the program.
Using Other Methods
  • For Windows 7, you may find the list of all installed programs when you click Start and scroll your mouse over the list that appear on the tab. You may see on that list utility for uninstalling the program. You may go ahead and uninstall using utilities available in this tab.
  • For Windows 10, you may click Start, then Settings, then choose Apps.
  • Scroll down to see the list of Apps and features installed in your computer.
  • Click the Program which is causing the runtime error, then you may choose to uninstall or click Advanced options to reset the application.
Virus infection causing runtime error on your computer must immediately be prevented, quarantined or deleted. Make sure you update your virus program and run a thorough scan of the computer or, run Windows update so you can get the latest virus definition and fix.
You might be getting the error because of an update, like the MS Visual C++ package which might not be installed properly or completely. What you can do then is to uninstall the current package and install a fresh copy.
  • Uninstall the package by going to Programs and Features, find and highlight the Microsoft Visual C++ Redistributable Package.
  • Click Uninstall on top of the list, and when it is done, reboot your computer.
  • Download the latest redistributable package from Microsoft then install it.
You might also be experiencing runtime error because of a very low free space on your computer.
  • You should consider backing up your files and freeing up space on your hard drive
  • You can also clear your cache and reboot your computer
  • You can also run Disk Cleanup, open your explorer window and right click your main directory (this is usually C: )
  • Click Properties and then click Disk Cleanup
If the error is related to a bad graphics driver, then you may do the following:
  • Open your Device Manager, locate the graphics driver
  • Right click the video card driver then click uninstall, then restart your computer
If the error you are getting is related to the Internet Explorer, you may do the following:
  1. Reset your browser.
    • For Windows 7, you may click Start, go to Control Panel, then click Internet Options on the left side. Then you can click Advanced tab then click the Reset button.
    • For Windows 8 and 10, you may click search and type Internet Options, then go to Advanced tab and click Reset.
  2. Disable script debugging and error notifications.
    • On the same Internet Options window, you may go to Advanced tab and look for Disable script debugging
    • Put a check mark on the radio button
    • At the same time, uncheck the "Display a Notification about every Script Error" item and then click Apply and OK, then reboot your computer.
If these quick fixes do not work, you can always backup files and run repair reinstall on your computer. However, you can do that later when the solutions listed here did not do the job.
Other languages:

Wie beheben Fehler 2021 (Mindestens ein Operator im Filterausdruck ist ungültig) - Einer oder mehrere Operatoren im Filterausdruck sind ungü[email protected] gültige Liste von Operatoren finden Sie in der [email protected]@[email protected]@@1.
Come fissare Errore 2021 (Uno o più operatori nell'espressione del filtro non sono validi) - Uno o più operatori nell'espressione del filtro non sono [email protected] un elenco valido di operatori fare riferimento al file della [email protected]@[email protected]@@1.
Hoe maak je Fout 2021 (Een of meer operators in de filterexpressie zijn ongeldig) - Een of meer operators in de filterexpressie zijn [email protected] een geldige lijst met operators raadpleegt u het [email protected]@[email protected]@@1.
Comment réparer Erreur 2021 (Un ou plusieurs opérateurs dans l'expression de filtre ne sont pas valides) - Un ou plusieurs opérateurs dans l'expression de filtre ne sont pas [email protected] une liste valide d'opérateurs, reportez-vous au fichier d'[email protected]@[email protected]@@1.
어떻게 고치는 지 오류 2021 (필터 표현식의 하나 이상의 연산자가 잘못되었습니다.) - 필터 표현식에 있는 하나 이상의 연산자가 유효하지 않습니다[email protected]유효한 연산자 목록은 도움말 파일@@[email protected]@@1을 참조하십시오.
Como corrigir o Erro 2021 (Um ou mais operadores na expressão do filtro são inválidos) - Um ou mais operadores na expressão de filtro são inválidos. @ Para obter uma lista válida de operadores, consulte o arquivo de ajuda @@ 1 @@@ 1.
Hur man åtgärdar Fel 2021 (En eller flera operatorer i filteruttrycket är ogiltiga) - En eller flera operatörer i filteruttrycket är [email protected] giltig lista över operatörer finns i hjälpfilen @@ 1 @@@ 1.
Как исправить Ошибка 2021 (Один или несколько операторов в выражении фильтра недопустимы.) - Один или несколько операторов в выражении фильтра недопустимы. @ Действительный список операторов см. В файле справки @@ 1 @@@ 1.
Jak naprawić Błąd 2021 (Co najmniej jeden operator w wyrażeniu filtra jest nieprawidłowy) - Jeden lub więcej operatorów w wyrażeniu filtru jest nieprawidł[email protected]łową listę operatorów można znaleźć w pliku [email protected]@[email protected]@@1.
Cómo arreglar Error 2021 (Uno o más operadores de la expresión de filtro no son válidos.) - Uno o más operadores de la expresión de filtro no son válidos. @ Para obtener una lista válida de operadores, consulte el archivo de ayuda @@ 1 @@@ 1.

The Author About The Author: Phil Hart has been a Microsoft Community Contributor since 2010. With a current point score over 100,000, they've contributed more than 3000 answers in the Microsoft Support forums and have created almost 200 new help articles in the Technet Wiki.

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Article ID: ACX09124EN

Applies To: Windows 10, Windows 8.1, Windows 7, Windows Vista, Windows XP, Windows 2000

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