I am using ArcMap for years and haven't ever asked a question on the forum, simple Google quarry was always enough. I have a serious problem, I am getting 99999 error when trying to execute Erase tool (snapshot attached).
I have tried several things: Reduce the size of the dataset, Repair geometry, move the gdb closer to the root, use shorter
path, run as admin, clear temp, copy to a new gdb, turn-off background processing, etc.
Can you give me some advice?
It looks to me like your topology is corrupted or there is a permissions problem. Try re-granting permissions on the data, and maybe delete or recreate your topology.