Write protect keep coming back

Suddenly write protect keep coming back only on my office documents !?

Its a bug? virus? or can I do something to avoid it!?

Nobody knows your system or what you’re doing to it. Likely something marks your files or directories as read-only, quite unlikely it would be a bug or a virus.

When asking a question, here or just about anywhere, you can help yourself by including what versions of software you are using. This starts by saying what OS (Operating System) you are using, and what vision. Then what version of LO you’re using, and where or how you installed it from. Next describe the specific steps to help others see what exactly you are running into. It’s much easier to try to help you if you will do these simple things. To get started click edit and edit your question