# How to define/modify folder for 'open files'?

**URL:** <https://discourse.jabref.org/t/how-to-define-modify-folder-for-open-files/1675>\
**Category:** Help\
**Created:** [June 30, 2019, 10:43am UTC](https://discourse.jabref.org/t/how-to-define-modify-folder-for-open-files/1675 "2019-06-30T10:43:28Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![son1c](https://avatars.discourse-cdn.com/v4/letter/s/96bed5/32.png) [@son1c](https://discourse.jabref.org/u/son1c)\
**Post date:** [June 30, 2019, 10:43am UTC](https://discourse.jabref.org/t/how-to-define-modify-folder-for-open-files/1675/1 "2019-06-30T10:43:28Z")

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Hello,

since I moved my work from laptop A with Jabref 2.11 to laptop B with Jabref 4.3.1 installed I am no longer able to use right-click-function ‘Open file’ because it is greyed out.  
My library consists of tons of scientic paper entries that all have Bibtexkeys. How and where can I define the option to modify the folder in that Jabref can find the corresponding pdf files?

Thanks in advance.

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**Author:** ![tobiasdiez](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.jabref.org/tobiasdiez/32/340_2.png) [@tobiasdiez](https://discourse.jabref.org/u/tobiasdiez)\
**Post date:** [July 3, 2019, 8:01am UTC](https://discourse.jabref.org/t/how-to-define-modify-folder-for-open-files/1675/2 "2019-07-03T08:01:33Z")

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You can specify the folder under File \> Library properties. Also make sure that the file pattern is correct (in the Preferences).