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"NetworkError when attempting to fetch resource." on many websites

  • 2 replies
  • 3 have this problem
  • 845 views
  • Last reply by fnnmyr

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in the last day firefox has all but stopped working on most websites. i can go to them and they start to load, but then they eventually break halfway through and either end up loading forever or produce an error. if i look at the console i see "Source map error: Error: NetworkError when attempting to fetch resource." this happens on twitter.com and raidbots.com to name two off the top of my head.

i did a complete refresh and even completely uninstalled and reinstalled the browser - it started working for a bit and then broke again. i have no plugins or extensions enabled currently (i have dashlane but this happens with it enabled or disabled). it's making the browser unusable. ive scanned my computer for malware and cant find anything either. i don't have this problem in any other browsers so not sure what else to try.

in the last day firefox has all but stopped working on most websites. i can go to them and they start to load, but then they eventually break halfway through and either end up loading forever or produce an error. if i look at the console i see "Source map error: Error: NetworkError when attempting to fetch resource." this happens on twitter.com and raidbots.com to name two off the top of my head. i did a complete refresh and even completely uninstalled and reinstalled the browser - it started working for a bit and then broke again. i have no plugins or extensions enabled currently (i have dashlane but this happens with it enabled or disabled). it's making the browser unusable. ive scanned my computer for malware and cant find anything either. i don't have this problem in any other browsers so not sure what else to try.

Chosen solution

We have seen issues reported with Avira security software, so maybe check that.

  • 1829925 - AV software Avira breaks websites
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Chosen Solution

We have seen issues reported with Avira security software, so maybe check that.

  • 1829925 - AV software Avira breaks websites
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wow. i uninstalled avira and the problem went away immediately. ive been using it for years without issues so never suspected it. who knew? thanks for the help.