Files saving as .tmp on network shares

We have a file server hosted within Azure, the file server has multiple network shares that are mapped using GPO. Users on the local site can then access files, modify and re-save. Some users are experiencing an issue with saving files. The files are saved as .TMP with random names letter-numbers.tmp. This is happening over multiple applications (word/excel/adobe).

I think this maybe down to offline files and caching locally of the network shares (this is only educated guessing and may not be the root cause - could it be related to Slow-Link settings). The next steps i want to complete would be the removal of offline files for all users relating to the network shares deployed to each person.

When creating the GPO should i be looking a a computer or user based? I have found the related GPO's in both under: AdminTemplates > Network > Offline Files but need to confirm the selections/options. I need to ensure that offline files on mapped drives are not cached and also ensure that any that are cached are removed.
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David Johnson, CD, MVPOwnerCommented:
that is because of permissions problems and not offline files problem. users need the modify permission on the ntfs permissions of the share.. offline files are controlled in each shares properties.

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ncomperAuthor Commented:
Thanks David....... File permissions..... that could defo be the issue. I have changed the permission and ensured the user is the owner AND all subfiles/folders should inherit
I've requested that this question be closed as follows:

Accepted answer: 500 points for David Johnson, CD (IT-Expert-Pro MVP)'s comment #a40715530

for the following reason:

This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.
ncomperAuthor Commented:
Many Thanks, apologies for the late response
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Windows Server 2012

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