Run-Time error - Urgent help needed

[Luis]

Hello.
I have an Access 20 db that suddenly began to produce the
following error:
"Run-Time error:2001
You cancelled the previous operation"

This error causes that i'm not able to open a certain
form.Why does this happened and how can i solve it?

Thanks

 

[Allen Browne]

If no code was changed, or new users introduced, or anything else changed,
this sounds like a corruption.

Try rebuilding the database by following the 6 steps for the first symptom
in this article:
Recovering from Corruption
at:
http://members.iinet.net.au/~allenbrowne/ser-47.html