Excel VBA Ignore one file whilst using Loop through a folder

I have a macro that finds a folder and updates all Excel documents within in the same way, however I need it to ignore one but I can't make it happen.

Here's the macro:

Sub FileUpdate()
    Application.AskToUpdateLinks = False
    Application.ScreenUpdating = False
    Application.Calculation = xlManual
    FolderName = (Sheets("Filepaths").Range("c22"))
    If Right(FolderName, 1) <> Application.PathSeparator Then FolderName = FolderName & Application.PathSeparator
    Filename = Dir(FolderName & ".xlsx")
    Do While Len(Filename)
        With Workbooks.Open(FolderName & Filename)
            Call SheetUpdate
        End With
        Filename = Dir
        ActiveWorkbook.Close SaveChnges = True
    Loop
    Application.AskToUpdateLinks = True
    Application.Calculation = xlAutomatic
End Sub

The files do all need to be in the same folder, so it's unfortunate that only one can't have this macro running through it.

For clarification in case, the filepath to the folder is in a sheet called 'Filepaths' and it calls another macro called 'SheetUpdate'.

I have tried using 'If Not' to kind of make it run backwards- so it updated all documents that didn't have the name of the file I wanted to avoid.
I also tried using 'Case' in different variations, but that was more of an attempt of putting other things together that I had seen work.

I'm very beginner to this and I've done a lot of searching for an answer, but i'm struggling for this specific one.

From your description it is not completely clear how SheetUpdate works but it seems like you are using ActiveSheet references. You might be interested in this post if you plan on continuing to use VBA in the future.

A solution that might work for you could look like this

Sub FileUpdate()
    Application.AskToUpdateLinks = False
    Application.ScreenUpdating = False
    Application.Calculation = xlManual
    
    Dim filderName As String
    
    folderName = ThisWorkbook.workshSheets("Filepaths").Range("c22").value
    
    If Right(folderName, 1) <> Application.PathSeparator Then _
        folderName = folderName & Application.PathSeparator
    
    Dim fileName As String
    fileName = Dir(folderName, vbNormal)
    
    Do While fileName <> ""
        If Not fileName = "name of file to ignore" Then
            With Workbooks.Open(folderName & fileName)
                Call SheetUpdate
            End With
            ActiveWorkbook.Close SaveChanges = True
        End If
        fileName = Dir
    Loop
    Application.AskToUpdateLinks = True
    Application.Calculation = xlAutomatic
End Sub