In the last week, Firefox has stopped playing videos - just gives a blank screen.
In the last week, Firefox has stopped playing videos from Facebook. I just get a black screen. Update conflict?
Chosen solution
Clear the cache and the cookies from sites that cause problems.
"Clear the Cache":
- Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"
"Remove Cookies" from sites causing problems:
- Tools > Options > Privacy > Cookies: "Show Cookies"
Start Firefox in Safe Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance/Themes).
- Don't click the Reset button on the Safe mode start window or otherwise make changes.
- https://support.mozilla.org/kb/Safe+Mode
You can check for problems caused by recent Flash 11 updates.
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Chosen Solution
Clear the cache and the cookies from sites that cause problems.
"Clear the Cache":
- Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"
"Remove Cookies" from sites causing problems:
- Tools > Options > Privacy > Cookies: "Show Cookies"
Start Firefox in Safe Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance/Themes).
- Don't click the Reset button on the Safe mode start window or otherwise make changes.
- https://support.mozilla.org/kb/Safe+Mode
You can check for problems caused by recent Flash 11 updates.
Clearing the cache and removing cookies did it. The lost cookie caused a request to log in anew. When that was done, the videos started loading again. Who can figure?