Since upgrading our NS to v7.6 a few months ago, we've had a problem with modifying copy file tasks. When we try to save a modified task we get the error: "Please provide the credentials". It is exactly the same problem as reported in this HOWTO article:
https://support.symantec.com/en_US/article.TECH233908.html
The workaround in that article doesn't seem to work, so we are stuck with having to recreate our copy file tasks whenever we want to modify them.
Does anyone have a working solution or does anyone know if this problem has been or is being addressed (the article states it's being looked at but no further update since Jan 2016)?