Solver32.dll Not Found in SPECIFIC Workbook When using Solver Add In

Hi guys, everything I seem to find online seem to says that when you have this error it's the .dll's location or something similar....
Here's the thing I CAN use solver just fine if I open a blank workbook and attempt to create a simple solver.

But when I'm in a specific workbook it throws the SOLVER32.DLL not found error after it finds a solution and I click "Ok" to view the results of that solution. Any idea how or why a specific workbook would cause solver to throw that error?

I cannot share the workbook. It has data in PowerPivot, and the PowerQuery add-in installed. But this is also the case for a blank workbook....
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

-PolakAuthor Commented:
Updated trouble shooting. If I open another workbook first, allow that workbook to load solver; then open the workbook throwing the Solver32.dll error, then close the other workbook the workbook that originally throws the error does not throw the error anymore.

However the behavior returns after saving, closing, and reopening the workbook.
-PolakAuthor Commented:
Solved. I copied and pasted Solver32.dll as well as Solver.XLSM (just in case) to ..\Windows\SysWOW64

My guess is that because the workbook was created in a 32-bit version of windows and I'm now using a 64-bit version it messes a bit with where solver looks for the solver32.dll.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Microsoft Excel

From novice to tech pro — start learning today.