Reset a Lost Nextcloud Admin Password with OCC
Use Nextcloud’s OCC command to reset an administrator password from the server shell, with guidance for usernames, permissions, and external login providers.
How to fix black screen error when watching Youtube
Youtube is always a familiar address for those who want to find entertainment through funny clips, this is also the largest video sharing site in the world. However, if you use the computer to access this address and encounter a black screen error, your Flash Player has a problem.
Download Adobe Flash Player Latest
Usually this error is very rare, if unfortunately made either your Flash Player has failed or someone has disabled Flash on your computer browsers.
Youtube has a black screen error
Step 1: Open the browser you are using (for example, here we use Chrome to watch Youtube). Then type the keyword Chrome: // Flags in the address bar and then Enter .
Step 2: In the new interface, find section Disable accelerated video decode - Decode hardware accelerated videos . If Disable mode - Disable then switch to On - Enable . If it is already in this mode, then surely your Flash Player has an error, it is best to remove and reinstall the new version.
Switch back to On mode and then click Rerun now
After the browser restarts, can you try accessing YouTube again to see if the error has been fixed?
This method is applicable to all different operating systems. If you use a browser other than Chrome, you can request HTML5 mode by going HERE .
Add the HSTS Header at the HTTPS Endpoint Serving Nextcloud
Clear Nextcloud’s HSTS warning by setting the header at Apache, NGINX, or your TLS proxy, then verify the public HTTPS response safely.
Troubleshoot Nextcloud App Installs That Report No Internet
Trace App Store installation failures to DNS, HTTPS, proxy, TLS, or configuration issues from the Nextcloud server itself.
Tame Nextcloud Preview CPU Spikes with a Scheduled Queue
Move thumbnail work to a controlled background schedule, trim unused preview sizes, and verify the queue without overwhelming your Nextcloud server.
Get Nextcloud Desktop Sync Moving Past “Processing Files”
Find the file, exclusion rule, connection issue, or client database state holding up Nextcloud sync, then verify uploads and downloads safely.
Clear the Nextcloud OPcache Warning by Adjusting the Right Limit
Find the PHP OPcache limit triggering Nextcloud’s warning, update the correct web PHP configuration, restart safely, and verify the result.
Connect Nextcloud to CODE Docker: Setup and Tradeoffs
Compare built-in and Docker-based CODE, then connect Collabora Online to Nextcloud through a secure HTTPS reverse proxy.
Build a Resilient Nextcloud Cluster with Galera
Plan a reliable Nextcloud HA deployment with shared storage, Redis locking, quorum-aware MariaDB routing, and practical failover checks.
Get Nextcloud Talk Calls Through When Direct Media Fails
Configure and verify a reachable TURN relay for Nextcloud Talk when firewalls or restrictive NAT block direct call media.
Clear Nextcloud Integrity Warnings by Restoring the Right Files
Use the invalid-file report to identify changed, missing, or extra Nextcloud code, restore trusted files safely, and verify the result.