Connect Seafile and Collabora with the Correct WOPI URL
Enable secure document editing in Seafile by configuring Collabora’s discovery URL, HTTPS, and WOPI access for your deployment.
Many Windows 10 users have reported that in the process of loading data, they often encounter File Explorer hangs causing the File Explorer window to completely freeze. Especially when the number of files is large and the computer configuration is weak.
Explaining this situation, on Windows 10 , Microsoft has integrated a Quick Access bar on File Explorer, allowing users to quickly access the frequently used folders and files for the purpose of helping users. Quick action on this tool.
Technically, when you launch File Explorer, the system will start the process of loading data related to the Quick Access bar , including the files you have recently opened, the clipboard, etc.In This load process, if any data is damaged or expired, File Explorer displays the message Working on it on the main interface until the boot process is complete.

However, if you open windows and applications on the computer too much, most of the RAM is being used, or the computer is configured as weak as I mentioned above, the message Working on it may cause File Explorer Unresponsive to users or also called hangs.
And to fix this situation, Download.com.vn has done a few instructions below so that you can fix the File Explorer error that freezes or hangs. Stay tuned for how to do it.
Step 1: Press Windows key + E to open your File Explorer, click the View tab and select Options , then select Next
Step 2: In Folder Options , select This PC in the Open File Explorer to section .
Continue in the Folder Options panel , click Clear in the Privacy area , and Windows will now clear the entire File Explorer browsing history.
Step 3: Next, copy the following path % AppData% \ Microsoft \ Windows \ Recent \ AutomaticDestinations and paste into the address of File Explorer to access the folder containing data related to the Quick Access bar.
Here you can highlight all the files in this folder and delete all files in it.
This way, File Explorer will no longer take too long to load data related to the Quick Access bar, at which point the system will begin the process of rebuilding the cache. And of course you will not have quick access to frequently used folders anymore.
So if you frequently visit a folder, you can pin it to the area below the Quick Access bar. And then Windows will not have to load too much data related to this folder.
Enable secure document editing in Seafile by configuring Collabora’s discovery URL, HTTPS, and WOPI access for your deployment.
Test the system clipboard, adjust browser permissions, and identify when an embedded Collabora integration needs an iframe policy change.
Mount font files into Docker and Collabora’s systemplate so custom typefaces appear in the editor and render correctly in documents.
Back up coolwsd.xml and its deployment sources, restore them safely, and verify CODE before users return to editing.
Allow the exact Nextcloud or other WOPI origin in CODE, then verify the active host allow-list and distinguish it from Nextcloud’s source-IP restriction.
Trace Collabora’s browser, WOPI, and WebSocket connections to find why a document will not open, then apply the fix that matches your Nextcloud setup.
Deploy Collabora CODE replicas with Helm, keep each document on one pod through WOPI affinity, and verify ingress, node placement, and Nextcloud editing.
Trace a failed socket handshake from browser to coolwsd, then match the reverse-proxy route to your Collabora version, including the CODE 26.04 Apache change.
Trace Collabora WOPI proof failures to mismatched keys, stale discovery data, clock drift, or proxy URL changes—without weakening validation.
Reset browser zoom, test a clean session, and identify when a malformed size menu needs a Collabora server update.