Re: "Safari won't open any websites after I just updated to Catalina 10.15.8
Safari won't open any websites after I just updated to Catalina 10.15.8, I'm on a really old iMac 21.5 inch, late 2013. Could someone help me as I can't afford a new computer right now. "
There are many possible causes for the issue you describe ... finding the right cause may help solve it.
Eg: You might want to check whether your Mac has enough free memory / stoage space:
A Mac needs at least 50 Gb free for your Operating System to work smoothly. (ie: not iCloud storage)
For MacOS Catalina: See used and available storage space on your Mac - Apple Support
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Other tips:
See what to do: If your Mac isn't connecting to the internet over Wi-Fi - Apple Support
Check whether the Safari version can be updated: Update to the latest version of Safari - Apple Support
See what to do to troubleshoot: If Safari doesn't work as expected on Mac - Apple Support
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For MacOS Catalina particularly: if needed:
Make Safari your default web browser on Mac - Apple Support
Safari troubleshooting on Mac - Apple Support
Change Websites preferences in Safari on Mac - Apple Support
Safari User Guide for Mac - Apple Support
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More info. / support / contact options etc.: Safari Support website: Safari - Official Apple Support