The Excel VBA code you provided is attempting to filter a range of cells on the active worksheet based on certain criteria.
The reason why this VBA code may not be running could be due to a syntax error. Here is a possible corrected version of the code:
ActiveSheet.Range("A:Z").AutoFilter Field:=1, Criteria1:="<>A", Criteria2:="<>B", Criteria3:="<>C", Operator:=xlFilterValues
In this corrected version of the code, we use the Criteria1, Criteria2, and Criteria3 parameters to specify multiple criteria for the filter. We also use the <> operator to exclude cells that contain the values "A", "B", or "C".
Note that the number of criteria that can be specified in this way is limited to three. If you need to specify more criteria, you may need to use a different approach, such as creating an array of values and looping through them to apply the filter.
It's also possible that the code is failing for another reason, such as the range of cells being filtered not being on the active worksheet or the worksheet being protected. In these cases, you may need to adjust the code accordingly or take additional steps to ensure that the code can run successfully.
The "Run-time error '1004': Application-defined or object-defined error" message is a common error that occurs in Excel VBA when there is an issue with the code referencing a range or object that does not exist, is incorrectly specified, or is protected.
In the case of the VBA code you provided, there are a few reasons why this error may occur. Here are some things you can check:
Make sure the active worksheet has data in column A through Z. If the range being filtered does not exist or is empty, you will get this error.
Check the syntax of the code to ensure that it is correct. Make sure that there are no typos or missing characters in the code.
Ensure that the worksheet is not protected. If the worksheet is protected, you may get this error if the code is trying to modify a protected cell or range.
Try adding a reference to the worksheet in the code to ensure that the correct worksheet is being filtered. For example, you can use the following code to reference a specific worksheet:
Worksheets("Sheet1").Range("A:Z").AutoFilter Field:=1, Criteria1:="<>A", Criteria2:="<>B", Criteria3:="<>C", Operator:=xlFilterValues
If none of the above solutions work, try stepping through the code using the VBA debugger to identify the specific line of code that is causing the error.
By checking these potential issues, you may be able to resolve the "Run-time error '1004': Application-defined or object-defined error" message and get your VBA code to run successfully.