Using Rhistory array formula works on 3 users' machines, but the 4th user receives the following message: " You cannot overwrite the array cells in Range E8". Can anyone offer some help?
This sounds like an issue that is specific to the spreadsheet, not the user. The most likely root cause is that the range that RHistory function needs to paste the data to overlaps with the range occupied by some array formula. Since Excel protects ranges occupied by array formulas, RHistory function cannot paste the data it retrieved. From the error message we know that both ranges include cell E8. You should be able to easily resolve this by moving RHistory function and/or the range where it pastes the data to another area in the spreadsheet. Or you can move the array formula. The bottom line is the range where RHistory function returns data to must not overlap with any array formulas.
If you need further assistance, please contact Refinitiv Helpdesk as suggested by @jirapongse.phuriphanvichai. This forum is not the best place to deal with issues that require troubleshooting and that we cannot replicate on our end. Through the Helpdesk we can have an interactive troubleshooting session, whereas a community forum format does not allow for this.