You have a workbook set up with Power Query scheduled refresh, but after updating the data source credentials, the refresh stops working and shows an error. This happens because Power Query stores a separate credential cache that is not automatically updated when you change your source login. This article explains why the credential mismatch occurs … Read more
When you refresh a Power Query in Excel, you see a prompt asking you to sign in with an organizational account even though you are already signed into Microsoft 365. This repeated authentication request interrupts your workflow and prevents data from loading automatically. The root cause is typically a credential mismatch, cached token corruption, or … Read more
When you delete data from your source table and refresh a PivotTable, the filter drop-down list may still show old items that no longer exist. This happens because Excel caches the unique values from the original data range inside the PivotTable cache. The stale items can clutter your filter list, making it harder to find … Read more
You built a PivotTable to summarize your data, but the Grand Total row shows a different number than the total you calculate directly in the source range. This mismatch can happen even when your source data appears clean and consistent. The root cause is almost always duplicate entries, hidden data, or calculation settings inside the … Read more
You use XLOOKUP in Excel expecting the correct match, but it returns the wrong value when your lookup column contains duplicate keys. This happens because XLOOKUP by default returns the first match it finds, and when duplicates exist, the first match may not be the one you intended. In this article, you will learn why … Read more
You shared an Excel workbook with colleagues, and formulas that use the LET function now show a #NAME? error. This happens because the LET function is a newer function that requires Excel 2021 or Microsoft 365, and some recipients may have an older version that does not recognize it. This article explains why the error … Read more
When you open the Name Manager in Excel expecting to see the LAMBDA function as a new option, it may be completely absent. This prevents you from creating custom reusable formulas using the LAMBDA feature. The cause is typically an outdated Excel version or a missing subscription channel that does not include LAMBDA. This article … Read more
You add checkboxes to a worksheet, save the file, and reopen it only to find the checkboxes missing or reset to their default state. This problem usually occurs because Excel 365 saves the checkbox state as a property of the workbook, but the file format or a damaged add-in prevents the state from being stored … Read more
You paste data into an Excel sheet and the dropdown arrows from your data validation cells vanish. The validation rules are still there, but the in-cell dropdown no longer appears when you click the cell. This happens because pasting content—especially from outside the workbook or from a range without validation—overwrites the cell’s validation settings. This … Read more
You apply conditional formatting to a column in Excel, then sort the data, and the formatting no longer matches the correct rows. The rules you set up seem to shift or disappear. This happens because conditional formatting rules can reference absolute cell ranges instead of relative positions. This article explains why sorting breaks conditional formatting … Read more