Title: Checksum issue
Last modified: April 28, 2020

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# Checksum issue

 *  [lysh](https://wordpress.org/support/users/lysh/)
 * (@lysh)
 * [6 years, 3 months ago](https://wordpress.org/support/topic/checksum-issue/)
 * Users cant upload images form the frontend. This message shows up
 * Could not verify the request checksum. Refresh the page and start gain. How do
   i fix this.
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fchecksum-issue%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Author [Greg Winiarski](https://wordpress.org/support/users/gwin/)
 * (@gwin)
 * [6 years, 3 months ago](https://wordpress.org/support/topic/checksum-issue/#post-12749301)
 * Hi,
    it seems you have sent the same question via email and in other thread, 
   so you should receive a replay via email soon.
 * Please do not double (or triple) post your questions, thanks.
 *  [pilarcalamedia](https://wordpress.org/support/users/pilarcalamedia/)
 * (@pilarcalamedia)
 * [6 years, 2 months ago](https://wordpress.org/support/topic/checksum-issue/#post-12902929)
 * Hi, I have the same issue. Could you please help?
 * The url is us29er.org/marketplace
 * Users cannot submit the form
 *  Plugin Author [Greg Winiarski](https://wordpress.org/support/users/gwin/)
 * (@gwin)
 * [6 years, 2 months ago](https://wordpress.org/support/topic/checksum-issue/#post-12903106)
 * Hi,
    for the OP this problem was caused by WP Fastest Cache plugin, i see you
   also have it installed on your website, please try disabling it (at least for
   the page with [adverts_add] shortcode) and see if it helps.

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Checksum issue’ is closed to new replies.

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## Tags

 * [checksum](https://wordpress.org/support/topic-tag/checksum/)

 * 3 replies
 * 3 participants
 * Last reply from: [Greg Winiarski](https://wordpress.org/support/users/gwin/)
 * Last activity: [6 years, 2 months ago](https://wordpress.org/support/topic/checksum-issue/#post-12903106)
 * Status: not resolved