Application.screenupdating = False was not stopping the screen update when it was call straight in an event. Screen Updating = False On Error Go To Open_Workbook1 Windows("Time M.xls"). Screen Updating = True I have had this same problem... I ran into this problem a few times myself recently.In my case, when adding Application.screenupdating = False in my Workbook_Before Save code, it did not do it's job. yes a common occurrence is when you call another piece of code. In one particular instance I found an interesting fix: I had a Watch set.
no matter what I did in code to turn off screen updating, it would not work and my app slowed to a crawl.
I set it to "All procedures" and "All modules" for the context, ran the procedure as usual in debug mode, then deleted the watch, closed the VB Code editor, and it was back to normal, the screen not being updated as my code was stating properly! I was able to solve my issue by deleting the Application. It appears that there is no single solution to this problem.
I really hope this will help some other people coming here for the same issue since indeed, this is the kind of things very time consuming and going you crazy! yes a common occurrence is when you call another piece of code. Each person may be experiencing it for a different reason.
I was killing myself over why the heck screen updating was not set to false!!!! I solved my problem with a very simple solution: At the very very end of the code put: Application. Just try everything on this page and see if it works for you!
Although I'm using VBA, not VB, I experienced the same symptoms when using Application.