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BUG: incorrect <code>cumsum</code> results for pyarrow on windows

Bug

Windowrolling, ewma, expandingrolling, ewma, expanding

WindowsWindows OSWindows OS

Status: Open.

#62477 In pandas-dev/pandas;

· MarcoGorelli opened on Sep 27, 2025

BUG: Errors using pyarrow datetime types on windows

Arrowpyarrow functionalitypyarrow functionality

Bug

DatetimeDatetime data dtypeDatetime data dtype

Docs

Upstream issueIssue related to pandas dependencyIssue related to pandas dependency

WindowsWindows OSWindows OS

Status: Open.

#61782 In pandas-dev/pandas;

· Liam3851 opened on Jul 5, 2025

BUG: Large XML files on Windows trigger false Encoding error

Bug

IO XMLread_xml, to_xmlread_xml, to_xml

WindowsWindows OSWindows OS

Status: Open.

#59447 In pandas-dev/pandas;

· liudvikasakelis opened on Aug 8, 2024

BUG: Using <code>Series.diff()</code> on a Series with Periods on Windows shows an overflow error

Bug

Needs TriageIssue that has not been reviewed by a pandas team memberIssue that has not been reviewed by a pandas team member

WindowsWindows OSWindows OS

Status: Open.

#58320 In pandas-dev/pandas;

· Dr-Irv opened on Apr 18, 2024

Make test_localization tests execute on windows targets

LocalizationInternationalization of dataInternationalization of data

Testingpandas testing functions or related to the test suitepandas testing functions or related to the test suite

WindowsWindows OSWindows OS

Status: Open.

#46597 In pandas-dev/pandas;

· smarie opened on Apr 1, 2022

BUG: to_clipboard raises an error with null values in data frame

Bug

IO DataIO issues that don't fit into a more specific labelIO issues that don't fit into a more specific label

Missing-datanp.nan, pd.NaT, pd.NA, dropna, isnull, interpolatenp.nan, pd.NaT, pd.NA, dropna, isnull, interpolate

WindowsWindows OSWindows OS

Status: Open.

#43402 In pandas-dev/pandas;

· BabakAmini opened on Sep 4, 2021

pd.read_parquet causing Python to crash

Bug

IO Parquetparquet, featherparquet, feather

WindowsWindows OSWindows OS

Status: Open.

#39031 In pandas-dev/pandas;

· scottmsul opened on Jan 7, 2021

BUG: DataFrame size overflows on Windows

Bug

WindowsWindows OSWindows OS

Status: Open.

#34557 In pandas-dev/pandas;

· FHTMitchell opened on Jun 3, 2020

BUG: read_csv skips leading space where it shouldn't

Bug

IO CSVread_csv, to_csvread_csv, to_csv

WindowsWindows OSWindows OS

Status: Open.

#34085 In pandas-dev/pandas;

· plammens opened on May 8, 2020

Wrong char in Polish datetime month_name function

Bug

DatetimeDatetime data dtypeDatetime data dtype

WindowsWindows OSWindows OS

Status: Open.

#31744 In pandas-dev/pandas;

· CezaryPukownik opened on Feb 6, 2020

CI: build documentation for Windows

CIContinuous IntegrationContinuous Integration

Docs

Needs DiscussionRequires discussion from core team before further actionRequires discussion from core team before further action

WindowsWindows OSWindows OS

Status: Open.

#26574 In pandas-dev/pandas;

· simonjayhawkins opened on May 30, 2019

BUG: Series.__repr__ crashing with tzlocal()

Bug

Error ReportingIncorrect or improved errors from pandasIncorrect or improved errors from pandas

Output-Formatting__repr__ of pandas objects, to_string__repr__ of pandas objects, to_string

TimezonesTimezone data dtypeTimezone data dtype

WindowsWindows OSWindows OS

Status: Open.

#24310 In pandas-dev/pandas;

· h-vetinari opened on Dec 16, 2018