SharePoint Document Issues

Why SharePoint cTag Changes After Renaming or Moving DOCX Files

Maira Mehtab Sep 27, 2026 869 views

Question details

Users need to understand why the cTag value of a DOCX file changes in SharePoint or OneDrive when the file is only renamed or moved, without any actual content modifications.

Product: Microsoft SharePoint and OneDrive
Device & OS: not provided
Scenario: Renaming or moving a DOCX file within a SharePoint document library or OneDrive folder.
Observed behavior: The file's cTag value updates unexpectedly, despite the file content remaining completely unchanged. This anomaly typically occurs with DOCX files but not with PDFs or PNGs.

Before you start

Ensure you have Microsoft 365 administrator privileges or know who your organization's IT administrator is, as investigating this server-side behavior requires administrative access to Microsoft Support.

Solution 1Recommended

Request Backend Investigation via Microsoft Support

Because a metadata-only change should not update a file's cTag, this anomaly indicates unexpected server-side behavior that requires an investigation by Microsoft Support.

According to OneDrive API documentation, an item's 'eTag' represents the entire item (content and metadata), while the 'cTag' represents only the content version. A metadata-only change like renaming or moving a file should update the eTag, but the cTag must remain unchanged.

If the cTag updates without any modifications to the DOCX file's content, this is an unexpected server-side issue in SharePoint or OneDrive that must be addressed by Microsoft's backend engineering team.

Contact Your Administrator

Reach out to your organization's Microsoft 365 administrator to report the unexpected cTag changes occurring after file renaming or moving.

Access the Microsoft 365 Admin Center

Ask the administrator to log into the Microsoft 365 Admin Center using their administrative credentials.

Open a Service Request

Navigate to the Support section within the Admin Center and open a new service request. Detail the unexpected cTag changes for DOCX files during metadata-only operations so backend logs can be reviewed.

File Format Specificity: This unexpected cTag behavior primarily affects DOCX files and typically does not occur with other file formats, such as PDF or PNG, when they are renamed or moved.

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Frequently Asked Questions

What is the difference between cTag and eTag in SharePoint?

In SharePoint and OneDrive, the cTag represents the content version of a file, meaning it should only change when the actual file content is modified. The eTag represents the entire item, including both the file content and its metadata, such as the filename or storage location.

Should renaming a file change its cTag in OneDrive?

No. Renaming or moving a file is considered a metadata-only change. This action should update the eTag, but the cTag should remain exactly the same since the internal contents of the file have not been altered.

Does this metadata anomaly affect all file types in SharePoint?

Based on user reports, this unexpected cTag change behavior typically affects DOCX files. Other file formats, such as PDF and PNG files, usually retain their original cTag values accurately after a metadata-only rename or move operation.

Document & File Issues