The hyperlink data type is more trouble than it's worth. It's simpler to store the value in a simple text column, and format the bound control to look and behave like a hyperlink, using code in its Click event procedure for follow the link. Users should
only interact with data via a form of course, never in a table's datasheet.
You'll find an example in BrowseDemo.zip in my public databases folder at:
https://onedrive.live.com/?cid=44CC60D7FEA42912&id=44CC60D7FEA42912!169
Note that if you are using an earlier version of Access you might find that the colour of some form objects such as buttons shows incorrectly and you will need to amend the form design accordingly.
If you have difficulty opening the link, copy the link (NB, not the link location) and paste it into your browser's address bar.
This little demo file is really intended to illustrate how to return the path to a file and then open the file from the form, but as regards its 'hyperlink' functionality it will work equally well with a Web URL. You can try it yourself by pasting a URL into
the full path control in the form. My code calls the Windows API ShellExecute function, but to simply follow a link you could just call the FollowHyperlink method of the Application object.
BTW a relational database table does not have cells, it has values at column positions in rows. Cells are a spreadsheet concept. Do not be misled by the superficial similarity between a datasheet and an Excel worksheet. A relational database is very, very
different from a spreadsheet in concept and methodology.