I have three files I use, on my computer, that I share with a coworker. Two are just download financial data that is linked differently than the accounting software does so I get more information. It is "recycled" data. The information could totally be scrapped and I could reload from the Great Plains source. The third is the document images (invoices and credit memos). The image and a key field is all there is. With the key field I can link to the other two files to see related information.
I have to log into each file. Never a problem. On the third file, I tried to reset the password for my coworker. It said the User and Password was not correct. I repeated my typing slowly making sure cap-locks was not an issue. I got the same message. It worked a week ago. The User and Password to log in, is an administrative level. It worked to open the file, but not to access security.
I took the files home over the weekend, to see how it worked on my MacBookPro with FMPA 16. Same message.
We both use FMPA 15. I installed FMP 13 to my computer. Security does not prompt for a password to open security, merely when closing. So I could access Security. I reset my coworker's password. When prompted for my Admin password, all User's failed. I retyped my passwords into the User's I use (including Admin). I was able to save the changes. But very bizarre. There were no unusual processes. Since I am not using FMS I close the files nightly.
All is well. I just wanted to share the experience. So if it happens to someone else, they will know they are not crazy (at least for this).