SOLVED

Security validation for this page is invalid

Copper Contributor

 Hello friends,

I am seeking your wisdom once more.

When I try to upload a pdf to our sharepoint folder I get the following error.

What is causing this and how can I fix it?

 

Many thanks in advance.

53a00ec174ed42b19d02ef7d341020c9.png

11 Replies
Hello! I have the same issue, does anybody know why ?

@Shaumya   We are having the same issue and it just started today

For us it has been since the beginning of the week. :D
Some of our users are reporting the same issue starting on the 4th of april.
Do you have any update? Did you find the cause?
I changed the users permissions and it seemed to work.
Hi Paul,
thank you for the info.
Could you ellaborate? What exactly did you change in permissions?
best response confirmed by PaulGrant78 (Copper Contributor)
Solution
Of course, sorry.

I gave the users that experienced this issue admin permission for their department, which they should have already had, on AD.

When the users restarted their devices the problem went away(so far) :)

@PaulGrant78 Also having his issue, but only for a few users in the organization, and only for specific Document libraries. This did not start until recently. 

I've had one user report this issue for a document library in our tenant. We are a (GCC) customer.
we have the same issue. But have not heard anything from the colleague anymore. Either it seems to be a temporary issue that got resolved or it is still ongoing.

First, clear your browser cache and cookies, then reopen the browser and try accessing SharePoint again.

Ensure you have the necessary permissions to upload files by checking the Library Settings > Permissions. If not, temporarily grant your account admin permissions for your department in Active Directory, then restart your device.

 

Additionally, add the SharePoint site URL to your browser's Trusted Sites list. Use a different browser to identify if the issue is browser-specific. For SharePoint Designer users, confirm the "Security Validation" feature is enabled. As an admin, you can restart the SharePoint Timer and Administration Services. Also, update your browser and install any required SharePoint add-ons or extensions. If the issue persists after these steps, contact Microsoft Support, as there may be an underlying configuration problem with your SharePoint setup.

1 best response

Accepted Solutions
best response confirmed by PaulGrant78 (Copper Contributor)
Solution
Of course, sorry.

I gave the users that experienced this issue admin permission for their department, which they should have already had, on AD.

When the users restarted their devices the problem went away(so far) :)

View solution in original post