A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
This matches a display rendering issue rather than an HLOOKUP formula problem, especially since the value updates correctly after the cell is scrolled off-screen and back into view.
Try these steps in order:
- In Excel, go to File > Options > General > User Interface.
Under When using multiple displays, switch the setting:
- if it is Optimize for compatibility, change it to Optimize for best appearance
- if it is Optimize for best appearance, change it to Optimize for compatibility Then restart Excel and test again.
- If multiple monitors are in use, make sure they use the same display scaling percentage.
- Start Excel in Safe Mode and test the workbook. If the issue does not occur there, a COM add-in may be involved. Check add-ins at File > Options > Add-Ins > COM Add-ins and disable them one at a time, restarting Excel after each test.
- Repair Office: Go to Control Panel > Programs > Programs and Features > Microsoft 365 Apps > Change and run Quick Repair.
- Make sure Excel is fully updated. Some Excel display and UI issues are fixed in later builds.
The key detail is that scrolling forces the cell to redraw, which strongly points to a screen refresh/rendering problem, not a lookup logic error.
- Why do some sheets have a fuzzy/blurry view and erratic cell selection until a slight scroll is done? - Microsoft Q&A
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