Object required string error

VBA Object Required Error (Error 424)

When VBA is not able to recognize the object for which you are referring to the property or a method it shows you the Object Required error. In simple words, if you refer to an object, but the name of that object is not correct (that object is not in the VBA’s object hierarchy) it shows error 424, like the following.

In the above code, as you can see, I have misspelled the active cell object, and when VBA’s executes that line of code can’t that object because there’s no object with that name (as I have misspelled it).

Note: If you have used the Option Explicit statement in the module then with the same, you’ll get a different error (see image below).

Used “Set” Keyword for a Non-Object Variable

When you use a variable to assign an object to it, you need to use the keyword “Set”. In the following example, you have a myWKS for the worksheet and iVal for the value from cell A1.

As you can see, in the above code you have variables out of which one is declared as a worksheet object and the second as a string. But at the time of assigning the value, we have used the “Set” keyword to the variable “iVal” which is not declared as an object but as a string.

How to Fix Object Required (Error 424) in VBA

  1. Go to the Debug menu in your visual basic editor.
  2. Use the step to run the entire code step by step.
  3. The moment you reach the line where you have an error VBA will show you an error.
  4. Correct that line of code.

The other way could be going through the code line by line by reading it to make sure you are referring to the right objects and using the correct name of the variables and objects.

You can also use the GOTO statement to surpass an error or show a message to the users once an error occurred.


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Object required (Error 424)

References to properties and methods often require an explicit object qualifier. This error has the following causes and solutions:

You referred to an object property or method, but didn’t provide a valid object qualifier. Specify an object qualifier if you didn’t provide one. For example, although you can omit an object qualifier when referencing a form property from within the form’s own module, you must explicitly specify the qualifier when referencing the property from a standard module.

You supplied an object qualifier, but it isn’t recognized as an object. Check the spelling of the object qualifier and make sure the object is visible in the part of the program in which you are referencing it. In the case of Collection objects, check any occurrences of the Add method to be sure the syntax and spelling of all the elements are correct.

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You supplied a valid object qualifier, but some other portion of the call contained an error. An incorrect path as an argument to a host application’s File Open command could cause the error. Check arguments.

You didn’t use the Set statement in assigning an object reference. If you assign the return value of a CreateObject call to a Variant variable, an error doesn’t necessarily occur if the Set statement is omitted. In the following code example, an implicit instance of Microsoft Excel is created, and its default property (the string «Microsoft Excel») is returned and assigned to the Variant RetVal . A subsequent attempt to use RetVal as an object reference causes this error:

Use the Set statement when assigning an object reference.

In rare cases, this error occurs when you have a valid object but are attempting to perform an invalid action on the object. For example, you may receive this error if you try to assign a value to a read-only property. Check the object’s documentation and make sure the action you are trying to perform is valid.

For additional information, select the item in question and press F1 (in Windows) or HELP (on the Macintosh).


VBA Object Required

By Madhuri Thakur

VBA Object functions

Object Required in Excel VBA

Object required is an error which is caused at run time when we have defined any variable which is not an object but we try to assign some values using a SET statement. This error is a run time error that arises for various reasons. Though this error has its own causes there are also solutions for this error. Every method requires an object qualifier and these objects are assigned by using the SET statement. For example, if we have defined any variable which is not an object but we try to assign some values using a SET statement this will cause the error at run time which is object required error. There are also some instances when we do everything right have correct object qualifiers and valid object but we try to assign values to a read-only property then also we will encounter this error.

How to Handle VBA Object Required?

Out of the numerous reasons we saw for the cause of Object Required Error, there are ways in which we can handle this error.

Valuation, Hadoop, Excel, Mobile Apps, Web Development & many more.

  1. For the spell mistakes for the variables or the functions in the code, we can use Option Explicit statement to not encounter this error.
  2. We can check whether the object we are referring to it exists or not.
  3. Also, we need to ensure whether we have defined or declared our variables correctly or not.

Example #1

Let us begin with the first example where this type of error might occur and it is when we misspell a function’s name. For this, follow the below steps:

Step 1: Insert a new module inside Visual Basic Editor (VBE). Click on Insert tab > select Module.

Step 2: Now we can declare our subprocedure.


Step 3: Look at the code below what we have in the first example.


Step 4: The application function has an extra character 3 with it and we run the above code we will encounter the following error.

Example #2

Now let us discuss an example where we will use to set an object where an object is not defined instead. In other words, we will treat a non-object feature as an object. For this, follow the below steps:

Step 1: We will start with another subprocedure.


Step 2: Let us declare a variable for the path or a location to save as a string data type.

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Step 3: Let us use the Set statement to set a path to this variable.


Step 4: For this example’s sake let us use Msgbox function to see what the final result will be.


Step 5: When we execute the above code we will get the following result.

We received this error because we used SET statement to a string variable and VBA treated this variable as an object with the SET statement.

Example #3

Sometimes we encounter this error when we don’t use SET statement when we assign an object reference. Let us go through this example and see how it may occur. For this, follow the below steps:

Step 1: In the same module let us start with the procedure for example 3.


Step 2: Declare any variable as a variant.


Step 3: Let us create an object using the Create Object statement.


Step 4: Now we have assigned the object reference but instead of using the SET statement.


Step 5: Once we execute the code above.

Example #4

Now there another chance when we encounter this error and that is when we try to assign values to a read-only property. Our object reference may be correct in this case but we will still encounter an error. Let us go through another example of how this might happen. For this, follow the below steps:

Step 1: In the same module let us begin.


Step 2: Below is the sample code for using a string variable with an undefined variable.


Step 3: When we execute the code above we will see the following error.

We received this error because we tried to assign values to read-only properties. Let me explain the code first we started a loop from where we are assigning object references but we are using the read-only properties.

Explanation of VBA Object Required:

From the above examples, it is very clear to us that Object Required is a run time error in VBA which we encounter while making some very small mistakes to some huge mistakes in VBA. Error handling this error can be tricky, as some mistakes are hard to identify. But there are some preventive methods such as using the option explicit statement or using the SET statement to assign objects only.

Things to Remember

There are few things which we need to remember about VBA Object Required and they are as follows:

  1. Object Required is a type of run time error in VBA.
  2. This error has an error code as 424.
  3. Spelling mistakes for variables and functions can also be a cause of Object Required Error.
  4. When some variable is not defined as an object but it is used as an object we may encounter Object Required error.

This is a guide to the VBA Object Required. Here we discuss how to handle Object Required in Excel VBA along with practical examples and downloadable excel template. You can also go through our other suggested articles –


How to Fix Typeerror a bytes-like object is required not ‘str’

Posted by Marta on March 24, 2021 Viewed 80718 times

In this article, I will explain why you will encounter the Typeerror a bytes-like object is required not ‘str’ error, and a few different ways to fix it.

The TypeError exception indicates that the operation you are trying to execute is not supported or not meant to be. You will usually get this error when you pass arguments of the wrong type. More details about the TypeError exception.

Apart from TypeError there are more exceptions in python. Check out this article to learn the most frequent exceptions and how to avoid them.

In this case, the bytes-like object is required message indicates the operation is excepting a bytes type; however, the type received was something else. Let’s see some examples.

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Table of Contents

Case #1: Reading from a file

This error comes up quite often when you are reading text from a file. Suppose that we have the following file, named file_sample.txt , containing the text below:

The file contains a list of products. Each line has the product name, the current stock available, and the price. I wrote a small program that will read the file and check if there are bikes available. Here is the code:

And the output will be :


When I opened the file, I used this: with open(‘file_sample.txt’, ‘rb’) . rb is saying to open the file in reading binary mode. Binary mode means the data is read in the form of bytes objects. Therefore if we look at line 7, I try to split a byte object using a string. That’s why the operation results in TypeError. How can I fix this?

Solution #1: Convert to a bytes object

To fix the error, the types used by the split() operation should match. The simplest solution is converting the delimiter to a byte object. I achieve that just by prefixing the string with a b

Note I also added the b prefix, or bytes conversion, to the condition if split_line[0]==b’bike’ , so the types also match, and the comparison is correct.

Solution #2: Open file in text mode

Another possible solution is opening the file in text mode. I can achieve this just by removing the b from the open() action. See the following code:

Typeerror: a bytes-like object is required, not ‘str’ replace

You could also find this error when you are trying to use the .replace() method, and the types are not matching. Here is an example:

Solution #1

You can avoid this problem by making sure the types are matching. Therefore one possible solution is converting the string passed into the .replace() function( line 2), as follows:

Note the result is a bytes object

Solution #2

Another way to get the types to match is converting the byte object to a string using the .decode() function( line 1), which will decode any binary content to string.

Please note you could also save a string in the variable text . I am using decode() because this article aims to illustrate how to manipulate bytes objects.

Typeerror: a bytes-like object is required, not ‘str’ socket

You will encounter this error when you are trying to send a string via socket. The reason is the socket.send() function expect any data to be converted to bytes. Here is a code snippet that will throw the typeerror:

To fix this, you will need to convert the http request inside the string (line 4) to bytes. There are two ways you can do this. Prefixing the string with b , which will convert the string to bytes:

or using .encode() method to convert the string to bytes:

The output will be the same in both cases:

The server response indicates the file we requested doesn’t exist. However, the code created the socket, and the HTTP request hit the destination server. Therefore we can consider the error fixed

Encode and decode in python

This error is mainly caused by passing the wrong type to a function. Therefore if a function is expecting the bytes object, we should convert the argument first. You can do so using the b prefix or using the .encode() function.

Bytes to String – Decode

String to Bytes – Encode


To summarise, when you encounter this error, it is important to double-checking the types you are used and make sure the types match, and you are not passing a wrong type to a function. I hope this helps and thanks for reading, and supporting this blog. Happy Coding!