So you want your viewers to know the last time data was refreshed or updated in your SharePoint list without having the list’s default “modified” column repeating the same date hundreds of times and taking up horizontal space.
There are a number of solutions out there to show the date a list was last modified using code. This solution provides an option best used with lists you bulk update, or copy and paste to replace all data regularly, but requires no coding. It basically pulls out the “last modified” date of your first list item and displays it at the top as seen above. This solution is not for you if you are updating only specific items within a list.
Depending on your organizational setup, this message may be misleading. For me, this message is prompted when I change my password used to sign in to Office 365. My version of SharePoint Designer (SPD) is not, in fact, out of date at all. My organization regularly requires password changes so these steps get me back and running with SPD in less than a minute:
After opening SPD, go to “Accounts” in the left hand menu
Under “connected services” remove connections for whatever could be causing the issue
Click “add a service,” then “storage,” then “Office 365 SharePoint”
Login with your new credentials. This should also link any OneDrive for Business account associated with your O365 account
If a password change isn’t what prompted your issue, try going to “Account” then “Switch Account” to make sure it’s attempting to connect to the correct account.