DW v7.0 On Premise - Continues to give Blank Screen on User login

Is there any know issue with v7.0 where the web client displays a blank screen when a user tries to login.
I do an iisreset and it resolves it but it keeps happening every few days.

You need to open a ticket with support.  They have several fixes for this, including a special web config file.

i have been experiencing this as well with a couple of clients and when i opened a ticket i was told this was resolved in 7.1 but no special web.config file was provided

Support did give me a fix to try by adding a line in the Web.config file.  I just modified it yesterday.  Waiting to see if the customer brings it up again to see if it has resolved the problem.  I will reserve sharing that fix until I can confirm the effect was positive.  Thanks for you feedback

Craig,
Has the fix resolved the issue?
could you please post the web.config change