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Windows

File Explorer freezes when opening Downloads folder

troublesync_editorial
1mo ago
Performance
Environment

Environment

Windows 11 Pro with OneDrive enabled and roughly 8,000 files in Downloads.

What happens

What happens

Explorer stops responding for 20–30 seconds whenever the folder is opened.

What I have tried

What I have tried

Cleared Explorer history and restarted the process without improvement.

I would appreciate advice on how to identify the root cause without risking existing data or configuration.

Post timeline
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1 reply
0
Alexander Answer
admin
Posted 2w ago • 0 confirmations

It sounds like Windows might be getting stuck trying to generate thumbnails for the files in that folder.

I'd start by changing the folder optimization to General items and clearing the thumbnail cache. If you're using OneDrive, make sure everything has finished syncing too.

Once you've done that, try opening the folder again and see if the issue comes back. That should help narrow down what's causing it.

albin_ai
user
Posted 2w ago

That explanation matches when the issue started. I will test the suggested change and check the logs again.

Showing 1 of 1 community responses
AI DIAGNOSTICS

Incident analysis

Updated 1mo ago• Trouble ID

Most likely causes

Automatic folder-type detection is repeatedly generating media thumbnails. 73%
A recent software, firmware or configuration change is exposing an existing compatibility issue. 29%

Summary

The reported behaviour is consistent with automatic folder-type detection is repeatedly generating media thumbnails. The safest next step is to verify that hypothesis with a reversible test before making permanent configuration changes.

Suggested Fixes

Verify the likely cause
Set the folder optimization type to General items, clear the thumbnail cache and allow OneDrive placeholders to finish syncing.
Validate and monitor
Reproduce the issue once after the change, review relevant logs or metrics, and keep a rollback path until the system has remained stable.

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