I made several changes to my database 2 weeks ago today, to queries forms and reports, and I added data. Tested it multiple times and saved it each time as I edited it over the span of 3 days. It was working perfectly. The company made some kind of change to the network or something last week, no idea what it was. Two days ago I tried to open the mdb and it would not open. I opened Access first and tried to open from there and got an error code that said that it was either already open or I did not have permission. Networking fixed it so that I could open it, but now I have no data past 3 months ago, and there are 10 new tables that I am unfamiliar with, all begin with Msys, and I cannot do anything with them besides opening them. I had networking restore the mdb from the back up 2 weeks ago but it has made no difference. Now any mdb that I open has those tables, but no data has been lost, except this one. If I open them from another station the tables are not there but my data and changes are still missing. I'm guessing this is a permissions issue that was caused when they made their changes, unfortunately no one has any idea what it is, can anyone help me?