We have an issue with IFS Enterprise Explorer 7.5. From time to time after launch and login user is not able to edit fields/check boxes/etc. Fields become greyed out. 

After some time everything returns to normal.

We have checked multiple solutions and when issue occurs nothing helps: use other computer/delete folder 2.0 and run instalation of IEE by link (Edge/IE/Chrome).

Do you have any advice?