I just tried changing my value to 22 and things still worked.

Can you check and see if there was an error on the console?

Mike Kaply

On Fri, Aug 23, 2019 at 11:29 AM Mike Kaply <mka...@mozilla.com> wrote:

> That is an internal preference that shouldn't be messed with (it should
> get set automatically)
>
> The current version is actually 87 (It is not tied to the browser version).
>
> And an old version should work fine (unless it was a string for some
> reason)?
>
> Mike
>
> On Fri, Aug 23, 2019 at 11:24 AM Tiago Marques Delboni <
> tiago.delb...@almg.gov.br> wrote:
>
>> Hi all!
>>
>> After upgrading from ESR 52.9 to ESR 60.8, some users reported that only
>> the first tab opened in Firefox was working. They can open new tabs but
>> cannot navigate on them.
>>
>> I've found that the problem was with the property
>> "browser.migration.version" set in
>> "%appdata%\Mozilla\Firefox\Profiles\{userprofile}\prefs.js":
>>
>> user_pref("browser.migration.version", 22);
>>
>> Removing this line or setting the value to 66 fix the issue. So, how
>> exactly does this property works? I couldn't find any information about
>> this.
>>
>> --
>>
>> *Tiago Marques Delboni*
>> Gerência de Aplicações e Suporte a Clientes / GTI
>> (31) 2108-7700
>> [image: Assembleia Legislativa de Minas Gerais] <http://www.almg.gov.br> 
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