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Why will Firefox will not update on my Windows 10 desktop?

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When trying to update from 68.0 to 68.0.1, Firefox keeps saying my operating system is to old and wants me to download a version 52 ESR release. What is making Firefox think that I am not running Windows 10 1903? As I fill this out, I see below that Firefox thinks my operating system is Windows Vista. What's broken and how do I fix it? Thanks!

When trying to update from 68.0 to 68.0.1, Firefox keeps saying my operating system is to old and wants me to download a version 52 ESR release. What is making Firefox think that I am not running Windows 10 1903? As I fill this out, I see below that Firefox thinks my operating system is Windows Vista. What's broken and how do I fix it? Thanks!

Chosen solution

Note that Firefox 68 doesn't run on Windows Vista (lat was Firefox 52.9.0), so it is likely that you run Firefox in compatibility mode.

Check that you do not run Firefox in compatibility mode. You can open the Properties of the Firefox desktop shortcut via the right-click context menu and check the "Compatibility" tab. Make sure that all items are deselected in the "Compatibility" tab of the Properties window.

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Additional System Details

Installed Plug-ins

  • Shockwave Flash 32.0 r0

Application

  • User Agent: Mozilla/5.0 (Windows NT 6.0; Win64; x64; rv:68.0) Gecko/20100101 Firefox/68.0

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Tyler Downer
  • Top 25 Contributor
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1525 solutions 10617 answers

Helpful Reply

Are you perhaps running Firefox on compatibility mode?

Are you perhaps running Firefox on compatibility mode?
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Question owner

No. I have a laptop that updates just fine. The problem is with my desktop only. I just re-installed 68.0 and was prompted to create a new profile. I've done that and will try to update to 68.0.x later to see if it works now. If it does, it was most likely a corrupted profile that made Firefox think I was on Win 7/XP, and wanted me to download a 52.x ESR version when I tried to manually update. Thanks for your reply!

No. I have a laptop that updates just fine. The problem is with my desktop only. I just re-installed 68.0 and was prompted to create a new profile. I've done that and will try to update to 68.0.x later to see if it works now. If it does, it was most likely a corrupted profile that made Firefox think I was on Win 7/XP, and wanted me to download a 52.x ESR version when I tried to manually update. Thanks for your reply!
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AliceWyman
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239 solutions 2582 answers

Helpful Reply

System details for your original post show this: User Agent: Mozilla/5.0 (Windows NT 6.0; Win64; x64; rv:68.0) Gecko/20100101 Firefox/68.0

Windows NT 6.0 is Windows Vista. If you switch to your original profile (ref: Profile Manager - Create, remove, or switch Firefox profiles), see this article:

System details for your original post show this: User Agent: Mozilla/5.0 (Windows NT 6.0; Win64; x64; rv:68.0) Gecko/20100101 Firefox/68.0 Windows NT 6.0 is Windows Vista. If you switch to your original profile (ref: [[Profile Manager - Create, remove, or switch Firefox profiles]]), see this article: * [[How to reset the default user agent on Firefox]]
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cor-el
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17335 solutions 156737 answers

Chosen Solution

Note that Firefox 68 doesn't run on Windows Vista (lat was Firefox 52.9.0), so it is likely that you run Firefox in compatibility mode.

Check that you do not run Firefox in compatibility mode. You can open the Properties of the Firefox desktop shortcut via the right-click context menu and check the "Compatibility" tab. Make sure that all items are deselected in the "Compatibility" tab of the Properties window.

Note that Firefox 68 doesn't run on Windows Vista (lat was Firefox 52.9.0), so it is likely that you run Firefox in compatibility mode. Check that you do not run Firefox in compatibility mode. You can open the Properties of the Firefox desktop shortcut via the right-click context menu and check the "Compatibility" tab. Make sure that all items are deselected in the "Compatibility" tab of the Properties window.
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Question owner

You're a genius! My shortcut for Firefox WAS set to compatibility mode. Don't have a clue how that happened. Fixed. Also reset useragent entries. Now I'll just wait till to next release and see if that worked. Probably does, as my laptop didn't have this issue or the compatibility mode and useragent SNAFU's. Thanks to everyone for your quick suggestions!

You're a genius! My shortcut for Firefox WAS set to compatibility mode. Don't have a clue how that happened. Fixed. Also reset useragent entries. Now I'll just wait till to next release and see if that worked. Probably does, as my laptop didn't have this issue or the compatibility mode and useragent SNAFU's. Thanks to everyone for your quick suggestions!
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AliceWyman
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239 solutions 2582 answers

dbcobb said

You're a genius! My shortcut for Firefox WAS set to compatibility mode. Don't have a clue how that happened. Fixed. Also reset useragent entries. Now I'll just wait till to next release and see if that worked. Probably does, as my laptop didn't have this issue or the compatibility mode and useragent SNAFU's. Thanks to everyone for your quick suggestions!

Thanks for posting back with the outcome. I'll mark the answer by cor-el as solving the problem.

''dbcobb [[#answer-1243291|said]]'' <blockquote> You're a genius! My shortcut for Firefox WAS set to compatibility mode. Don't have a clue how that happened. Fixed. Also reset useragent entries. Now I'll just wait till to next release and see if that worked. Probably does, as my laptop didn't have this issue or the compatibility mode and useragent SNAFU's. Thanks to everyone for your quick suggestions! </blockquote> Thanks for posting back with the outcome. I'll mark the answer by cor-el as solving the problem.
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